Fix: memory leaks in SVG & WEBP thumbnail loader on error

source/blender/imbuf/intern/format_svg.cc

@@ -54,10 +54,11 @@ ImBuf *imb_load_filepath_thumbnail_svg(const char *filepath,
   ImBuf *ibuf = IMB_allocImBuf(dest_w, dest_h, 32, IB_byte_data);
   if (ibuf != nullptr) {
     nsvgRasterize(rast, image, 0, 0, scale, ibuf->byte_buffer.data, dest_w, dest_h, dest_w * 4);
-    nsvgDeleteRasterizer(rast);
-    nsvgDelete(image);
     IMB_flipy(ibuf);
   }
 
+  nsvgDeleteRasterizer(rast);
+  nsvgDelete(image);
+
   return ibuf;
 }

source/blender/imbuf/intern/format_webp.cc

@@ -138,6 +138,8 @@ ImBuf *imb_load_filepath_thumbnail_webp(const char *filepath,
 
   if (WebPDecode(data, data_size, &config) != VP8_STATUS_OK) {
     fprintf(stderr, "WebP: Failed to decode image\n");
+    IMB_freeImBuf(ibuf);
+
     imb_mmap_lock();
     BLI_mmap_free(mmap_file);
     imb_mmap_unlock();