more verbose errors: show which file failed on open - stagit

commit 1bab6952c6dcac50e66418f117032bb0f627d559
parent 2a5669514088684bc9bfe1fddb5e353fb07ae6d6
Author: Hiltjo Posthuma <hiltjo@codemadness.org>
Date:   Fri, 10 Nov 2017 20:53:46 +0100

more verbose errors: show which file failed on open

Diffstat:
M stagit.c  | 4 ++--

1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/stagit.c b/stagit.c
@@ -223,7 +223,7 @@ efopen(const char *name, const char *flags)
     FILE *fp;
 
     if (!(fp = fopen(name, flags)))
-        err(1, "fopen");
+        err(1, "fopen: '%s'", name);
 
     return fp;
 }
@@ -1115,7 +1115,7 @@ main(int argc, char *argv[])
         if ((fd = mkstemp(tmppath)) == -1)
             err(1, "mkstemp");
         if (!(wcachefp = fdopen(fd, "w")))
-            err(1, "fdopen");
+            err(1, "fdopen: '%s'", tmppath);
         /* write last commit id (HEAD) */
         git_oid_tostr(buf, sizeof(buf), head);
         fprintf(wcachefp, "%s\n", buf);