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-rw-r--r--stdlib/getsubopt.c4
1 files changed, 1 insertions, 3 deletions
diff --git a/stdlib/getsubopt.c b/stdlib/getsubopt.c
index ecdc1edce9..d559d9077f 100644
--- a/stdlib/getsubopt.c
+++ b/stdlib/getsubopt.c
@@ -41,9 +41,7 @@ getsubopt (optionp, tokens, valuep)
     return -1;
 
   /* Find end of next token.  */
-  endp = strchr (*optionp, ',');
-  if (endp == NULL)
-    endp = strchr (*optionp, '\0');
+  endp = __strchrnul (*optionp, ',');
 
   /* Find start of value.  */
   vstart = memchr (*optionp, '=', endp - *optionp);