MINOR: map: export map_get_reference() function
This function is used to identify map with his reference into the CLI
functions.
diff --git a/src/map.c b/src/map.c
index 78392d4..fc961e7 100644
--- a/src/map.c
+++ b/src/map.c
@@ -25,7 +25,7 @@
struct list maps = LIST_HEAD_INIT(maps); /* list of struct map_reference */
/* This function return existing map reference or return NULL. */
-static struct map_reference *map_get_reference(const char *reference)
+struct map_reference *map_get_reference(const char *reference)
{
struct map_reference *ref;