stb_include: fix stb_include_string iteration. Upper bound was incremented each loop instead of iterator causing endless loop when called

stb_include.h

@@ -249,11 +249,11 @@ char *stb_include_strings(char **strs, int count, char *inject, char *path_to_in
    char *result;
    int i;
    size_t length=0;
-   for (i=0; i < count; ++count)
+   for (i=0; i < count; ++i)
       length += strlen(strs[i]);
    text = (char *) malloc(length+1);
    length = 0;
-   for (i=0; i < count; ++count) {
+   for (i=0; i < count; ++i) {
       strcpy(text + length, strs[i]);
       length += strlen(strs[i]);
    }