fix warnings

diff --git a/ext/mbstring/mbstring.c b/ext/mbstring/mbstring.c
index d7b7043026110eb01492be717a117d4095fdeef2..a8e40e440b9548cdbfbde0e943f6ed2ed43adbc3 100644 (file)
--- a/ext/mbstring/mbstring.c
+++ b/ext/mbstring/mbstring.c
@@ -3535,7 +3535,7 @@ PHPAPI char *php_mb_safe_strrchr_ex(const char *s, unsigned int c, size_t nbytes
 
        if (nbytes == (size_t)-1) {
                while (*p != '\0') {
-                       if (*p == c) {
+                       if ((unsigned int)*p == c) {
                                last = (char *)p;
                        }
                        p += php_mb_mbchar_bytes_ex(p, enc);
@@ -3544,7 +3544,7 @@ PHPAPI char *php_mb_safe_strrchr_ex(const char *s, unsigned int c, size_t nbytes
                register size_t bcnt = nbytes;
                register size_t nbytes_char;
                while (bcnt > 0) {
-                       if (*p == c) {
+                       if ((unsigned int)*p == c) {
                                last = (char *)p;
                        }
                        nbytes_char = php_mb_mbchar_bytes_ex(p, enc);