emile: Fix resource leak

Summary: This fixes Coverity CID1288918 where data_start variable was
being leaked if the rectangles did not intersect.

@fix

Signed-off-by: Chris Michael <cp.michael@samsung.com>

src/lib/emile/emile_image.c

@@ -510,7 +510,10 @@ _emile_tgv_data(Emile_Image *image,
                                image->block.width, image->block.height);
 
             if (!eina_rectangle_intersection(&current, &master))
-              continue;
+              {
+                 eina_binbuf_free(data_start);
+                 continue;
+              }
 
             if (image->compress)
               {