metadata: don't check for NULL when calling g_free.

g_free does the check already. Also small code logic cleanup and whitespace fix.

ext/metadata/gstbasemetadata.c

@@ -526,8 +526,6 @@ gst_base_metadata_reset_streaming (GstBaseMetadata * filter)
 static void
 gst_base_metadata_reset_parsing (GstBaseMetadata * filter)
 {
-
-
   if (filter->prepend_buffer) {
     gst_buffer_unref (filter->prepend_buffer);
     filter->prepend_buffer = NULL;
@@ -1991,18 +1989,13 @@ void gst_base_metadata_update_inject_segment_with_new_data
   MetadataChunk *inject = META_DATA_INJECT_CHUNKS (base->metadata).chunk;
   const gsize inject_len = META_DATA_INJECT_CHUNKS (base->metadata).len;
 
-  if (!(data && size))
+  if (!(data && size && *data && *size))
-    goto done;
-  if (*data == 0)
-    goto done;
-  if (*size == 0)
     goto done;
 
   for (i = 0; i < inject_len; ++i) {
     if (inject[i].type == type) {
       inject[i].size = *size;
-      if (inject[i].data)
+      g_free (inject[i].data);
-        g_free (inject[i].data);
       inject[i].data = *data;
       *size = 0;
       *data = 0;

ext/metadata/gstmetadatamux.c

@@ -394,12 +394,12 @@ gst_metadata_mux_create_chunks_from_tags (GstBaseMetadata * base)
   GstMetadataMux *filter = GST_METADATA_MUX (base);
   GstTagSetter *setter = GST_TAG_SETTER (filter);
   const GstTagList *taglist = gst_tag_setter_get_tag_list (setter);
-  guint8 *buf = NULL;
-  guint32 size = 0;
 
   GST_DEBUG_OBJECT (base, "Creating chunks from tags..");
 
   if (taglist) {
+    guint8 *buf = NULL;
+    guint32 size = 0;
 
     if (gst_base_metadata_get_option_flag (base) & META_OPT_EXIF) {
       GST_DEBUG_OBJECT (base, "Using EXIF");
@@ -407,6 +407,9 @@ gst_metadata_mux_create_chunks_from_tags (GstBaseMetadata * base)
           &filter->exif_options);
       gst_base_metadata_update_inject_segment_with_new_data (base, &buf, &size,
           MD_CHUNK_EXIF);
+      g_free (buf);
+      buf = NULL;
+      size = 0;
     }
 
     if (gst_base_metadata_get_option_flag (base) & META_OPT_IPTC) {
@@ -414,6 +417,9 @@ gst_metadata_mux_create_chunks_from_tags (GstBaseMetadata * base)
       metadatamux_iptc_create_chunk_from_tag_list (&buf, &size, taglist);
       gst_base_metadata_update_inject_segment_with_new_data (base, &buf, &size,
           MD_CHUNK_IPTC);
+      g_free (buf);
+      buf = NULL;
+      size = 0;
     }
 
     if (gst_base_metadata_get_option_flag (base) & META_OPT_XMP) {
@@ -421,18 +427,13 @@ gst_metadata_mux_create_chunks_from_tags (GstBaseMetadata * base)
       metadatamux_xmp_create_chunk_from_tag_list (&buf, &size, taglist);
       gst_base_metadata_update_inject_segment_with_new_data (base, &buf, &size,
           MD_CHUNK_XMP);
+      g_free (buf);
     }
 
-  }
+  } else {
-
-  else {
     GST_DEBUG_OBJECT (base, "Empty taglist");
   }
 
-  if (buf) {
-    g_free (buf);
-  }
-
 }
 
 static gboolean

ext/metadata/metadataexif.c

@@ -388,10 +388,9 @@ metadatamux_exif_create_chunk_from_tag_list (guint8 ** buf, guint32 * size,
 
   if (!(buf && size))
     goto done;
-  if (*buf) {
+
-    g_free (*buf);
+  g_free (*buf);
-    *buf = NULL;
+  *buf = NULL;
-  }
   *size = 0;
 
   val = gst_tag_list_get_value_index (taglist, GST_TAG_EXIF, 0);

ext/metadata/metadataiptc.c

@@ -252,10 +252,9 @@ metadatamux_iptc_create_chunk_from_tag_list (guint8 ** buf, guint32 * size,
 
   if (!(buf && size))
     goto done;
-  if (*buf) {
+
-    g_free (*buf);
+  g_free (*buf);
-    *buf = NULL;
+  *buf = NULL;
-  }
   *size = 0;
 
   val = gst_tag_list_get_value_index (taglist, GST_TAG_IPTC, 0);

ext/metadata/metadatatypes.c

@@ -99,10 +99,8 @@ metadata_chunk_array_free (MetadataChunkArray * array)
 {
   metadata_chunk_array_clear (array);
   array->allocated_len = 0;
-  if (array->chunk) {
+  g_free (array->chunk);
-    g_free (array->chunk);
+  array->chunk = NULL;
-    array->chunk = NULL;
-  }
 }
 
 /*
@@ -121,9 +119,7 @@ metadata_chunk_array_clear (MetadataChunkArray * array)
 {
   while (array->len) {
     array->len--;
-    if (array->chunk[array->len].data) {
+    g_free (array->chunk[array->len].data);
-      g_free (array->chunk[array->len].data);
-    }
   }
 }
 
@@ -239,8 +235,7 @@ metadata_chunk_array_remove_by_index (MetadataChunkArray * array, guint32 i)
 {
 
   if (i < array->len) {
-    if (array->chunk[i].data)
+    g_free (array->chunk[i].data);
-      g_free (array->chunk[i].data);
     if (i < --array->len) {
       memmove (&array->chunk[i], &array->chunk[i + 1],
           sizeof (MetadataChunk) * (array->len - i));

ext/metadata/metadataxmp.c

@@ -362,10 +362,9 @@ metadatamux_xmp_create_chunk_from_tag_list (guint8 ** buf, guint32 * size,
 
   if (!(buf && size))
     goto done;
-  if (*buf) {
+
-    g_free (*buf);
+  g_free (*buf);
-    *buf = NULL;
+  *buf = NULL;
-  }
   *size = 0;
 
   val = gst_tag_list_get_value_index (taglist, GST_TAG_XMP, 0);