check distinct tags fixer

tests/37-indirect-choice-OK.asn1

@@ -26,7 +26,8 @@ BEGIN
 	Choice2 ::= [2] CHOICE {
 		c-a OCTET STRING,
 		c-b INTEGER,
-		c-d [3] Choice1
+		c-d [3] Choice1,
+		c-e [4] Choice1
 	}
 
 	Choice3 ::= [3] EXPLICIT Choice2		-- tags [3] [2]

tests/37-indirect-choice-OK.asn1.-EF

@@ -20,7 +20,8 @@ Choice1 ::= CHOICE {
 Choice2 ::= [2] EXPLICIT CHOICE {
     c-a	 OCTET STRING,
     c-b	 INTEGER,
-    c-d	 [3] EXPLICIT Choice1
+    c-d	 [3] EXPLICIT Choice1,
+    c-e	 [4] EXPLICIT Choice1
 }
 
 Choice3 ::= [3] EXPLICIT Choice2