Fix patch_dir/patch

scripts/build.py

@@ -80,7 +80,7 @@ def build_package(repo_dir, package_dir, name,
                     abs_patch_dir = os.path.join(
                         repo_dir, content["patch_dir"])
                     apply_patches(abs_patch_dir)
-                if "patch" in content:
+                elif "patch" in content:
                     abs_patch_dir = os.path.join(repo_dir, content["patch"])
                     run_checked(["patch", "-d", ".", "-p0", abs_patch_dir])
                 elif "git_url" in content: