Fixed cppcheck (error) Iterator 'i' used after element has been erased

src/ACGL/OpenGL/Data/TextureDataLoadStore.cc

@@ -79,9 +79,11 @@ void unregisterTextureLoadFunction(TextureLoadFuncPtr _function)
     std::map<std::string,TextureLoadFuncPtr>::iterator n = textureLoadFunctions.end();
     for(std::map<std::string,TextureLoadFuncPtr>::iterator i = textureLoadFunctions.begin() ; i != n ; i++)
     {
-
         if(i->second == _function)
+        {
             textureLoadFunctions.erase(i);
+            break;
+        }
     }
 }