fix table concat bug

Author: loveshell

waf.lua

@@ -70,6 +70,9 @@ elseif PostCheck then
 			end
 			for key, val in pairs(args) do
 				if type(val) == "table" then
+					if type(val[1]) == "boolean" then
+						return
+					end
 					data=table.concat(val, ", ")
 				else
 					data=val