tag_{id3,ape}: explicitly open files in binary mode

Add the flag "b" to fopen().  Windows compatibility.

src/tag_ape.c

@@ -78,7 +78,7 @@ tag_ape_load(const char *file)
 		unsigned char reserved[8];
 	} footer;
 
-	fp = fopen(file, "r");
+	fp = fopen(file, "rb");
 	if (!fp)
 		return NULL;