spirv2dxil: Fix memory leak on error path.
Fix resource leak reported by Coverity Scan.
Resource leak (RESOURCE_LEAK) leaked_storage: Variable file_contents going out of scope leaks the storage it points to.
Fixes: 531d17c3 ("spirv2dxil: Support linking multiple shaders") Signed-off-by: Vinson Lee vlee@freedesktop.org