dir.h: move struct exclude declaration to top level

There is no actual nested struct here. Move it out for clarity.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Karsten Blees <blees@dcon.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

dir.h

@@ -15,24 +15,7 @@ struct dir_entry {
 #define EXC_FLAG_MUSTBEDIR 8
 #define EXC_FLAG_NEGATIVE 16
 
-/*
+struct exclude {
- * Each excludes file will be parsed into a fresh exclude_list which
- * is appended to the relevant exclude_list_group (either EXC_DIRS or
- * EXC_FILE).  An exclude_list within the EXC_CMDL exclude_list_group
- * can also be used to represent the list of --exclude values passed
- * via CLI args.
- */
-struct exclude_list {
-	int nr;
-	int alloc;
-
-	/* remember pointer to exclude file contents so we can free() */
-	char *filebuf;
-
-	/* origin of list, e.g. path to filename, or descriptive string */
-	const char *src;
-
-	struct exclude {
 	/*
 	 * This allows callers of last_exclude_matching() etc.
 	 * to determine the origin of the matching pattern.
@@ -51,7 +34,26 @@ struct exclude_list {
 	 * and from -1 decrementing for patterns from CLI args.
 	 */
 	int srcpos;
-	} **excludes;
+};
+
+/*
+ * Each excludes file will be parsed into a fresh exclude_list which
+ * is appended to the relevant exclude_list_group (either EXC_DIRS or
+ * EXC_FILE).  An exclude_list within the EXC_CMDL exclude_list_group
+ * can also be used to represent the list of --exclude values passed
+ * via CLI args.
+ */
+struct exclude_list {
+	int nr;
+	int alloc;
+
+	/* remember pointer to exclude file contents so we can free() */
+	char *filebuf;
+
+	/* origin of list, e.g. path to filename, or descriptive string */
+	const char *src;
+
+	struct exclude **excludes;
 };
 
 /*