TextureCache: Fix a possible crash when partial updating palette textures

Source/Core/VideoCommon/TextureCacheBase.cpp

@@ -429,7 +429,8 @@ TextureCacheBase::DoPartialTextureUpdates(TCacheEntry* entry_to_update, u8* pale
         {
           // Remove the temporary converted texture, it won't be used anywhere else
           // TODO: It would be nice to convert and copy in one step, but this code path isn't common
-          InvalidateTexture(GetTexCacheIter(entry));
+          iter.first = InvalidateTexture(iter.first);
+          continue;
         }
         else
         {