freetype: darwin: ignore case whe comparing

The `psz_lcname` is lowercase, so we need to use `strcasecmp`
instead.

modules/text_renderer/freetype/fonts/darwin.c

@@ -85,7 +85,7 @@ int getFontIndexInFontFile(const char* psz_filePath, const char* psz_family) {
         char* fontNameStr = FromCFString(fontName, kCFStringEncodingUTF8);
         char* displayNameStr = FromCFString(displayName, kCFStringEncodingUTF8);
 
-        if (!strcmp(familyNameStr, psz_family) || !strcmp(fontNameStr, psz_family) || !strcmp(displayNameStr, psz_family)) {
+        if (!strcasecmp(familyNameStr, psz_family) || !strcasecmp(fontNameStr, psz_family) || !strcasecmp(displayNameStr, psz_family)) {
             index = i;
             FREENULL(familyNameStr);
             FREENULL(fontNameStr);