# HG changeset patch
# User Sascha Wilde <wilde@intevation.de>
# Date 1395671668 -3600
# Node ID 3fb6ddd6b70db2dc59b6932bb67b689c013f867b
# Parent  5f830969e4a15ff37665732fe58ab62c6d6f5ab3
str_trim: do nothing if *s is NULL.

diff -r 5f830969e4a1 -r 3fb6ddd6b70d common/strhelp.c
--- a/common/strhelp.c	Mon Mar 24 15:17:16 2014 +0100
+++ b/common/strhelp.c	Mon Mar 24 15:34:28 2014 +0100
@@ -129,9 +129,12 @@
 str_trim (char **s)
 {
   size_t i;
-  while (isspace(**s))
-    (*s)++;
-  i = strlen(*s);
-  while (isspace((*s)[--i]))
-    (*s)[i] = '\0';
+  if (*s != NULL)
+    {
+      while (isspace(**s))
+        (*s)++;
+      i = strlen(*s);
+      while (isspace((*s)[--i]))
+        (*s)[i] = '\0';
+    }
 }