Fix path_resolve on Windows

Author: Nopey

src/utils/path.c

@@ -119,7 +119,7 @@ const char *path_c(const path *path) {
 bool path_resolve(path *p) {
 #if defined(_WIN32) || defined(WIN32)
     path tmp;
-    DWORD ret = GetFullPathNameA(p->buf, strlen(p->buf), tmp.buf, NULL);
+    DWORD ret = GetFullPathNameA(p->buf, sizeof(p->buf), tmp.buf, NULL);
     if(ret > 0 && ret < PATH_MAX_LENGTH) {
         *p = tmp;
         normalize_slashes(p);