Skip last comma when there are no extensions

This is to get rid of the GCC warning:
"warning: comma at end of enumerator list [-Wpedantic]"
diff --git a/tests/47-set-ext-OK.asn1.-Pfwide-types b/tests/47-set-ext-OK.asn1.-Pfwide-types
index c2c9dfb..bfbf195 100644
--- a/tests/47-set-ext-OK.asn1.-Pfwide-types
+++ b/tests/47-set-ext-OK.asn1.-Pfwide-types
@@ -196,7 +196,7 @@
 
 typedef enum T3_PR {
 	T3_PR_NOTHING,	/* No components present */
-	T3_PR_i,
+	T3_PR_i
 	/* Extensions may appear below */
 	
 } T3_PR;
@@ -279,7 +279,7 @@
 
 typedef enum T4_PR {
 	T4_PR_NOTHING,	/* No components present */
-	T4_PR_i,
+	T4_PR_i
 	/* Extensions may appear below */
 	
 } T4_PR;