Commit D31 : Check if the user count needs to be decreased after adding a new BI image texture.

Fixes this problem:

*Go to the Blender (BI) textures tab and open an existing image.
*Hit on the plus sign next to datablock to create a new image.
*Complete the creation process and switch back to the first (loaded) image.
-> The image user count raises... will raise as often as you hit the plus sign

source/blender/editors/space_image/image_ops.c

@@ -1792,7 +1792,9 @@ static int image_new_exec(bContext *C, wmOperator *op)
 	else {
 		Tex *tex = CTX_data_pointer_get_type(C, "texture", &RNA_Texture).data;
 		if (tex && tex->type == TEX_IMAGE) {
-			tex->ima = ima;
+			if (tex->ima)
+				tex->ima->id.us--;	/* Decrease the previous image users count by 1 */
+			tex->ima = ima;			/* Assign the new image */
 			ED_area_tag_redraw(CTX_wm_area(C));
 		}
 	}