From: Heiko Schlittermann (HS12-RIPE) <hs@schlittermann.de>
Date: Sun, 12 Feb 2017 18:23:12 +0000 (+0100)
Subject: os_getcwd(): do not realloc if there was no malloc().
X-Git-Tag: exim-4.90devstart~1
X-Git-Url: https://git.exim.org/exim.git/commitdiff_plain/4a5ee04fd186cb7d86a4f70821dacc55f8cce98d

os_getcwd(): do not realloc if there was no malloc().
---

diff --git a/src/src/os.c b/src/src/os.c
index 47af038f7..ca24e8dd2 100644
--- a/src/src/os.c
+++ b/src/src/os.c
@@ -879,7 +879,7 @@ char * b = (char *)buffer;
 if (!size) size = PATH_MAX;
 if (!b && !(b = malloc(size))) return NULL;
 if (!(b = getcwd(b, size))) return NULL;
-return realloc(b, strlen(b) + 1);
+return buffer ? buffer : realloc(b, strlen(b) + 1);
 }
 #endif