git-branchp: fix accidental str concatenation

git-branchp

@@ -22,7 +22,7 @@ def main():
 		if has_branchless():
 			run([b'git', b'hide'] + [b'draft()::' + branch for branch in to_delete])
 		else:
-			run([b'git' b'branch', b'-D'] + to_delete)
+			run([b'git', b'branch', b'-D'] + to_delete)
 
 def all_remotes():
 	refs = run(['git', 'for-each-ref', '--format=%(refname:short)', 'refs/remotes'], capture_output=True)