git-p4: Unset P4DIFF environment variable when using 'p4 -du diff'

diff --git a/run-command.c b/run-command.c
index 743757c36ec0e5667fd8af28800ac095f1581adb..44100a749b09439121073e32e7a3143b54185d31 100644 (file)
--- a/run-command.c
+++ b/run-command.c
@@ -91,6 +91,13 @@ int start_command(struct child_process *cmd)
                        close(cmd->in);
                }
 
+               if (cmd->no_stderr)
+                       dup_devnull(2);
+               else if (need_err) {
+                       dup2(fderr[1], 2);
+                       close_pair(fderr);
+               }
+
                if (cmd->no_stdout)
                        dup_devnull(1);
                else if (cmd->stdout_to_stderr)
@@ -103,13 +110,6 @@ int start_command(struct child_process *cmd)
                        close(cmd->out);
                }
 
-               if (cmd->no_stderr)
-                       dup_devnull(2);
-               else if (need_err) {
-                       dup2(fderr[1], 2);
-                       close_pair(fderr);
-               }
-
                if (cmd->dir && chdir(cmd->dir))
                        die("exec %s: cd to %s failed (%s)", cmd->argv[0],
                            cmd->dir, strerror(errno));