HOTFIX: DPT16 was not correctly handled for uninitialized KOs

Author: Waldemar Porscha

src/knx/dpt.cpp

@@ -72,7 +72,7 @@ unsigned char Dpt::sizeInMemory() const
         case 275:
             return 8;
         case 16:
-            return 15; // terminating with 0x00 char
+            return 14; 
         case 285:
             return 16;
         default:

src/knx/group_object.cpp

@@ -293,8 +293,9 @@ void GroupObject::recalculateDataLength(const Dpt& type)
         _dataLength = sizeInMemory;
         if (_data)
             delete[] _data;
-        _data = new uint8_t[_dataLength];
-        memset(_data, 0, _dataLength);
+        if (type.mainGroup == 16) sizeInMemory++;
+        _data = new uint8_t[sizeInMemory];
+        memset(_data, 0, sizeInMemory);
     }
 }