Fix: FromJson (neg integers)

Author: neolithos

NeoLua.Test/LuaTable.cs

@@ -1396,8 +1396,8 @@ public void TestJsonDateTime()
 		[TestMethod]
 		public void TestFromJson01()
 		{
-			dynamic t = LuaTable.FromJson("{ \"a\":true, \"b\" : false, \"c\": 10, \"d\": 1099511627776, \"e\": \"test\", \"f\": 1.0, \"g\": 1.23, \"h\": 1e10 }");
-			TestResult(new LuaResult(t.a, t.b, t.c, t.d, t.e, t.f, t.g, t.h), true, false, 10, 1099511627776L, "test", 1.0, 1.23, 1e10);
+			dynamic t = LuaTable.FromJson("{ \"a\":true, \"b\" : false, \"c\": -10, \"d\": 1099511627776, \"e\": \"test\", \"f\": 1.0, \"g\": 1.23, \"h\": 1e10 }");
+			TestResult(new LuaResult(t.a, t.b, t.c, t.d, t.e, t.f, t.g, t.h), true, false, -10, 1099511627776L, "test", 1.0, 1.23, 1e10);
 		}
 	} // class LuaTableTests
 }

NeoLua/LuaTable.cs

@@ -4509,9 +4509,9 @@ object ParseNumber()
 					return doubleValue;
 				}
 				else if (integerValue < Int32.MaxValue)
-					return (int)integerValue;
+					return isNeg ? -(int)integerValue : (int)integerValue;
 				else
-					return integerValue;
+					return isNeg ? -integerValue : integerValue;
 			} // func ParseNumber
 
 			string ParseString(bool asMember)