Merge pull request loongly#4 from quicklyslow/master

unity2019导出了Baselib，用到了System.UIntPtr类型对应c++的size_t

Author: loongly

BindGenerater/Generater/C/CTypeResolver.cs

@@ -102,6 +102,8 @@ public virtual string TypeName()
                     return "uint8_t";
                 case "SByte":
                     return "int8_t";
+                case "UIntPtr":
+                    return "size_t";
             }
 
             return type.Name;