ss7_instance: Only call osmo_ss7_pc_width() when needed

Change-Id: Ie0728cef36c1cbeb755baef105f3ab88d025db01
---
M src/ss7_instance.c
1 file changed, 2 insertions(+), 2 deletions(-)


git pull ssh://gerrit.osmocom.org:29418/libosmo-sigtran refs/changes/84/43384/1

diff --git a/src/ss7_instance.c b/src/ss7_instance.c
index 05f6be8..b349974 100644
--- a/src/ss7_instance.c
+++ b/src/ss7_instance.c
@@ -671,15 +671,15 @@
 
 int osmo_ss7_pointcode_parse_mask_or_len(const struct osmo_ss7_instance *inst, const char *in)
 {
-	unsigned int width = osmo_ss7_pc_width(inst ? &inst->cfg.pc_fmt : &default_pc_fmt);
-
 	if (in[0] == '/') {
 		/* parse mask by length */
+		unsigned int width;
 		int masklen = atoi(in+1);
 		if (masklen < 0 || masklen > 32)
 			return -EINVAL;
 		if (masklen == 0)
 			return 0;
+		width = osmo_ss7_pc_width(inst ? &inst->cfg.pc_fmt : &default_pc_fmt);
 		return (0xFFFFFFFF << (width - masklen)) & ((1 << width)-1);
 	}
 	/* parse mask as point code */

