corrected termination of NTS

src/lib/ebus/data.cpp

@@ -645,6 +645,7 @@ result_t StringDataField::readSymbols(SymbolString& input, const unsigned char b
 	size_t start = 0, count = m_length;
 	int incr = 1;
 	unsigned char ch, last = 0, hour = 0;
+	bool terminated = false;
 	if (count==REMAIN_LEN && input.size()>baseOffset) {
 		count = input.size()-baseOffset;
 	} else if (baseOffset + count > input.size()) {
@@ -725,7 +726,9 @@ result_t StringDataField::readSymbols(SymbolString& input, const unsigned char b
 		default:
 			if (ch < 0x20)
 				ch = (unsigned char)m_dataType.replacement;
-			if (ch != 0x00)
+			if (ch == 0x00)
+				terminated = true;
+			else if (!terminated)
 				output << setw(0) << dec << static_cast<char>(ch);
 			break;
 		}

src/lib/ebus/test/test_data.cpp

@@ -62,6 +62,7 @@ int main()
 		{"x,,nts:10",  "Hallo, Du",                     "10fe07000a48616c6c6f2c20447500", "00", ""},
 		{"x,,nts:10",  "          ",                    "10fe07000a20202020202020202020", "00", ""},
 		{"x,,nts:10",  "",                              "10fe07000a00000000000000000000", "00", ""},
+		{"x,,nts:10",  "abc",                           "10fe07000a6162630065666768696a", "00", "W"},
 		{"x,,nts:11",  "",                              "10fe07000a20202020202020202020", "00", "rW"},
 		{"x,,nts:24",  "abcdefghijklmnopqrstuvwx",      "10fe0700186162636465666768696a6b6c6d6e6f707172737475767778", "00", ""},
 		{"x,,nts:*",   "abcde",                         "10fe0700056162636465",           "00", "W"},