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-rw-r--r--src/tool/mapcache.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/tool/mapcache.c b/src/tool/mapcache.c
index 356cdd352..05f62ca7a 100644
--- a/src/tool/mapcache.c
+++ b/src/tool/mapcache.c
@@ -188,7 +188,7 @@ char *remove_extension(char *mapname)
char *ptr, *ptr2;
ptr = strchr(mapname, '.');
if (ptr) { //Check and remove extension.
- while (ptr[1] && (ptr2 = strchr(ptr+1, '.')))
+ while (ptr[1] && (ptr2 = strchr(ptr+1, '.')) != NULL)
ptr = ptr2; //Skip to the last dot.
if (strcmp(ptr,".gat") == 0)
*ptr = '\0'; //Remove extension.