[PATCH] fix to strchr() in lib/string.c

[Nicolas Pitre]

The return value of strchr("foo",0) should be the start address of
"foo" + 3, not NULL.

--- linux/lib/string.c	Thu Aug  1 17:16:34 2002
+++ linux/lib/string.c	Sat Sep 21 12:21:54 2002
@@ -190,10 +190,11 @@
  */
 char * strchr(const char * s, int c)
 {
-	for(; *s != (char) c; ++s)
-		if (*s == '\0')
-			return NULL;
-	return (char *) s;
+	do {
+		if (*s == (char) c)
+			return (char *) s;
+	} while (*s++);
+	return NULL;
 }
 #endif