FIX: use a macro within the preprocessor to avoid compiler warnings

Author: Oldes

src/core/n-io.c

@@ -504,18 +504,18 @@ static REBSER *Read_All_File(char *fname)
 	if (!tmp) return R_NONE;
 
 	// Convert OS native wide string back to Rebol file type
-	if (OS_WIDE) {
-		new = To_REBOL_Path(tmp, 0, OS_WIDE, FALSE);
+#ifdef OS_WIDE == TRUE
+	new = To_REBOL_Path(tmp, 0, OS_WIDE, FALSE);
+#else
+	REBLEN len = LEN_BYTES(tmp);
+	if (Is_Not_ASCII(tmp, len)) {
+		// Result from the native call contains Unicode chars...
+		new = Decode_UTF_String(tmp, len, 8, FALSE, FALSE);
+		new = To_REBOL_Path(SERIES_DATA(new), SERIES_TAIL(new), -1, FALSE);
 	} else {
-		REBLEN len = LEN_BYTES(tmp);
-		if (Is_Not_ASCII(tmp, len)) {
-			// Result from the native call contains Unicode chars...
-			new = Decode_UTF_String(tmp, len, 8, FALSE, FALSE);
-			new = To_REBOL_Path(SERIES_DATA(new), SERIES_TAIL(new), -1, FALSE);
-		} else {
-			new = To_REBOL_Path(tmp, len, 0, FALSE);
-		}
+		new = To_REBOL_Path(tmp, len, 0, FALSE);
 	}
+#endif
 	if (!new) return R_NONE;
 
 	Set_Series(REB_FILE, D_RET, new);