gogensig:panic setunderlying case in goplus#61

Author: luoliwoshang

cmd/gogensig/convert/_testdata/enum/conf/llcppg.cfg

@@ -1,5 +1,5 @@
 {
   "name": "enum",
-  "include": ["temp.h"],
+  "include": ["temp.h","compact.h"],
   "cplusplus":false
 }

cmd/gogensig/convert/_testdata/enum/hfile/temp.h

@@ -1,3 +1,4 @@
+
 enum { enum1, enum2 };
 enum spectrum { red, orange, yello, green, blue, violet };
 
@@ -17,4 +18,4 @@ typedef enum {
     NULL2 = 1,
 } algorithm_t2;
 
-typedef algorithm_t algorithm;
+#include <compact.h>