wimlib_vmsg(): Fix error msg printing

diff --git a/src/util.c b/src/util.c
index 9aad4b2cc2c962fbf1ba133d29aa098b629a2529..f915f2fe855b2f67db21e5b0be1365acfd0d943a 100644 (file)
--- a/src/util.c
+++ b/src/util.c
@@ -59,7 +59,7 @@ static void wimlib_vmsg(const char *tag, const char *format,
                                snprintf(buf, sizeof(buf),
                                         "unknown error (errno=%d)", errno_save);
                        }
-                       fputs(buf, stderr);
+                       fprintf(stderr, ": %s", buf);
                }
                putc('\n', stderr);
                errno = errno_save;