line-log: make range_set_append() static

The underlying function range_set_append_unsafe() has a direct
external caller in builtin/blame.c but this apparently "safer"
variant has earned no external callers since its inception.

Make it file-scope static.

Signed-off-by: Junio C Hamano <[email protected]>

Author: gitster

line-log.c

@@ -68,7 +68,7 @@ void range_set_append_unsafe(struct range_set *rs, long a, long b)
 	rs->nr++;
 }
 
-void range_set_append(struct range_set *rs, long a, long b)
+static void range_set_append(struct range_set *rs, long a, long b)
 {
 	assert(rs->nr == 0 || rs->ranges[rs->nr-1].end <= a);
 	range_set_append_unsafe(rs, a, b);

line-log.h

@@ -28,8 +28,6 @@ void range_set_init(struct range_set *, size_t prealloc);
 void range_set_release(struct range_set *);
 /* Range includes start; excludes end */
 void range_set_append_unsafe(struct range_set *, long start, long end);
-/* New range must begin at or after end of last added range */
-void range_set_append(struct range_set *, long start, long end);
 /*
  * In-place pass of sorting and merging the ranges in the range set,
  * to sort and make the ranges disjoint.