InnoDB: Remove ut_str_contains() and replace it with strchr()

innobase/dict/dict0dict.c:
  Replace ut_str_contains() with strchr()
innobase/include/ut0mem.h:
  Remove ut_str_contains(), a reinvented strchr()
innobase/row/row0mysql.c:
  Replace ut_str_contains() with strchr()
innobase/ut/ut0mem.c:
  Remove ut_str_contains(), a reinvented strchr()

innobase/dict/dict0dict.c

@@ -1002,7 +1002,7 @@ dict_table_rename_in_cache(
 
 		sprintf(foreign->foreign_table_name, "%s", table->name);
 
-		if (ut_str_contains(foreign->id, '/')) {
+		if (strchr(foreign->id, '/')) {
 			ulint	db_len;
 			char	old_id[2000];
 
@@ -3331,7 +3331,7 @@ loop:
 
 	while (foreign != NULL) {
 		if (0 == ut_strcmp(foreign->id, id)
-		    || (ut_str_contains(foreign->id, '/')
+		    || (strchr(foreign->id, '/')
 			&& 0 == ut_strcmp(id,
 					dict_remove_db_name(foreign->id)))) {
 			/* Found */
@@ -4059,7 +4059,7 @@ dict_print_info_on_foreign_key_in_create_format(
 	ulint	cpy_len;
 	ulint	i;
 	
-	if (ut_str_contains(foreign->id, '/')) {
+	if (strchr(foreign->id, '/')) {
 		/* Strip the preceding database name from the constraint id */
 		stripped_id = foreign->id + 1
 				+ dict_get_db_name_len(foreign->id);

innobase/include/ut0mem.h

@@ -85,14 +85,6 @@ ut_str_catenate(
 			/* out, own: catenated null-terminated string */
 	char*	str1,	/* in: null-terminated string */
 	char*	str2);	/* in: null-terminated string */
-/**************************************************************************
-Checks if a null-terminated string contains a certain character. */
-
-ibool
-ut_str_contains(
-/*============*/
-	char*	str,	/* in: null-terminated string */
-	char	c);	/* in: character */
 
 #ifndef UNIV_NONINL
 #include "ut0mem.ic"

innobase/row/row0mysql.c

@@ -2362,7 +2362,7 @@ row_rename_table_for_mysql(
 				db_name, constraints_to_drop[i],
 				db_name, constraints_to_drop[i]);
 
-			if (!ut_str_contains(constraints_to_drop[i], '/')) {
+			if (!strchr(constraints_to_drop[i], '/')) {
 				/* If this happens to be an old format
 				constraint, let us delete it. Since all new
 				format constraints contain '/', it does no

innobase/ut/ut0mem.c

@@ -221,27 +221,3 @@ ut_str_catenate(
 
 	return(str);
 }
-
-/**************************************************************************
-Checks if a null-terminated string contains a certain character. */
-
-ibool
-ut_str_contains(
-/*============*/
-	char*	str,	/* in: null-terminated string */
-	char	c)	/* in: character */
-{
-	ulint	len;
-	ulint	i;
-
-	len = ut_strlen(str);
-
-	for (i = 0; i < len; i++) {
-		if (str[i] == c) {
-
-			return(TRUE);
-		}
-	}
-
-	return(FALSE);
-}