ext_texture_integer: Fix memory leaks on error paths.
Fix defects reported by Coverity Scan.
Resource leak (RESOURCE_LEAK) leaked_storage: Variable name going out of scope leaks the storage it points to.
Fixes: 9be78360 ("use a glsl1.30 version of texture integer") Fixes: 08b9bf31 ("texture integer glsl130: Remove GLenum string literals.") Signed-off-by: Vinson Lee vlee@freedesktop.org