Revert "Updated to current libretro-common (#269)" (#271)

This reverts commit 9481e11.

libgambatte/libretro-common/compat/compat_strl.c

@@ -60,3 +60,10 @@ size_t strlcat(char *dest, const char *source, size_t size)
    return len + strlcpy(dest, source, size);
 }
 #endif
+
+char *strldup(const char *s, size_t n)
+{
+   char *dst = (char*)malloc(sizeof(char) * (n + 1));
+   strlcpy(dst, s, n);
+   return dst;
+}

libgambatte/libretro-common/compat/fopen_utf8.c

@@ -37,28 +37,27 @@
 void *fopen_utf8(const char * filename, const char * mode)
 {
 #if defined(LEGACY_WIN32)
+   FILE             *ret = NULL;
    char * filename_local = utf8_to_local_string_alloc(filename);
+
+   if (!filename_local)
+      return NULL;
+   ret = fopen(filename_local, mode);
    if (filename_local)
-   {
-      FILE *ret          = fopen(filename_local, mode);
       free(filename_local);
-      return ret;
-   }
+   return ret;
 #else
-   wchar_t * filename_w  = utf8_to_utf16_string_alloc(filename);
+   wchar_t * filename_w = utf8_to_utf16_string_alloc(filename);
+   wchar_t * mode_w = utf8_to_utf16_string_alloc(mode);
+   FILE* ret = NULL;
+
+   if (filename_w && mode_w)
+      ret = _wfopen(filename_w, mode_w);
    if (filename_w)
-   {
-      FILE    *ret       = NULL;
-      wchar_t *mode_w    = utf8_to_utf16_string_alloc(mode);
-      if (mode_w)
-      {
-         ret             = _wfopen(filename_w, mode_w);
-         free(mode_w);
-      }
       free(filename_w);
-      return ret;
-   }
+   if (mode_w)
+      free(mode_w);
+   return ret;
 #endif
-   return NULL;
 }
 #endif