vlr_sgs: fix VTY setting for SGs counter.

When trying to modify the value of an SGs counter (eg. ns11), then the
setting is never stored. The reason for this is that OsmoMSC uses the
wrong string table to compare the user input.

Related: OS#6008
Change-Id: I0358c1ec0026c37fda6db1f3af3145393df25cfd
diff --git a/include/osmocom/msc/vlr_sgs.h b/include/osmocom/msc/vlr_sgs.h
index 7231449..aade5d3 100644
--- a/include/osmocom/msc/vlr_sgs.h
+++ b/include/osmocom/msc/vlr_sgs.h
@@ -69,7 +69,7 @@
 extern const struct value_string sgs_state_counter_names[];
 static inline const char *vlr_sgs_state_counter_name(enum vlr_sgs_state_ctr Ns)
 {
-	return get_value_string(sgs_state_timer_names, Ns);
+	return get_value_string(sgs_state_counter_names, Ns);
 }
 
 /* This callback function is called when an SGs location update is complete */