removed gcc-7 warnings
diff --git a/libasn1fix/asn1fix_crange.c b/libasn1fix/asn1fix_crange.c
index b983e49..4c9345d 100644
--- a/libasn1fix/asn1fix_crange.c
+++ b/libasn1fix/asn1fix_crange.c
@@ -1040,8 +1040,9 @@
 		range->not_OER_visible = 1;
 
     if(!ct
-       || (range->not_OER_visible && (cpr_flags & CPR_strict_OER_visibility)))
+       || (range->not_OER_visible && (cpr_flags & CPR_strict_OER_visibility))) {
         return range;
+    }
 
 	switch(ct->type) {
 	case ACT_EL_VALUE: