ctucx.git: nimgit

reference.nim: improve proc ==

diff --git a/nimgit/reference.nim b/nimgit/reference.nim
@@ -55,7 +55,10 @@ proc getGitReferenceNames* (repo: GitRepository): seq[string] =
         free(addr gitRefsArr)
         raise newException(CatchableError, "Cannot get reference-names: " & $error.getResultCode)
 
-    result = cstringArrayToSeq(cast[cstringArray](gitRefsArr.strings), gitRefsArr.count)
+    if gitRefsArr.count == 0'u:
+        result = newSeq[string]()
+    else:
+        result = cstringArrayToSeq(cast[cstringArray](gitRefsArr.strings), gitRefsArr.count)
     
     free(addr gitRefsArr);