bugfix: make 'macros' module available for nimscript

compiler/vmgen.nim

@@ -1810,7 +1810,7 @@ proc gen(c: PCtx; n: PNode; dest: var TDest; flags: TGenFlags = {}) =
   of nkVarSection, nkLetSection:
     unused(n, dest)
     genVarSection(c, n)
-  of declarativeDefs:
+  of declarativeDefs, nkMacroDef:
     unused(n, dest)
   of nkLambdaKinds:
     #let s = n.sons[namePos].sym

tests/test_nimscript.nims

@@ -21,5 +21,6 @@ import subexes
 import tables
 import unicode
 import uri
+import macros
 
 echo "Nimscript imports are successful."