bugfix: len openarray

tests/accept/compile/tmodulealias.nim

@@ -0,0 +1,17 @@
+
+
+when defined(windows):
+  import winlean
+else:
+  import posix
+
+when defined(Windows):
+  template orig: expr = 
+    winlean
+else:
+  template orig: expr = 
+    posix
+
+proc socket(domain, typ, protocol: int): int =
+  result = orig.socket(ord(domain), ord(typ), ord(protocol)))
+