Description: Clear signal_name and value descriptions

Reason: otherwise the next will always be added which is wrong
Files: dbc.cpp

Author: Murmele

src/dbc.cpp

@@ -43,6 +43,8 @@ struct VALObject {
 };
 
 bool parseVal(const std::string& str, VALObject& obj) {
+    obj.signal_name = "";
+    obj.vd.clear();
     auto state = Identifier;
     const char* a = str.data();
     libdbc::Signal::SignalValueDescriptions vd;

test/test_dbc.cpp

@@ -214,3 +214,42 @@ VAL_ 3221225472 State1 123 "Description 1" 0 "Description 2" 4000000000 "Big val
     REQUIRE(signal.svDescriptions.at(2).description == "Big value and special characters &$§())!");
 
 }
+
+TEST_CASE("Signal Value Multiple VAL_") {
+    /*
+     * It should not crash, even extended CAN id is used
+     */
+    const auto* filename = std::tmpnam(NULL);
+
+    create_tmp_dbc_with(filename, R"(BO_ 3221225472 MSG1: 8 Vector__XXX
+ SG_ State1 : 0|8@1+ (1,0) [0|200] "Km/h"  DEVICE1,DEVICE2,DEVICE3
+ SG_ State2 : 0|8@1+ (1,0) [0|204] ""  DEVICE1,DEVICE2,DEVICE3"
+BO_ 123 MSG1: 8 Vector__XXX
+ SG_ State1 : 0|8@1+ (1,0) [0|200] "Km/h"  DEVICE1,DEVICE2,DEVICE3
+ SG_ State2 : 0|8@1+ (1,0) [0|204] ""  DEVICE1,DEVICE2,DEVICE3
+VAL_ 3221225472 State1 123 "Description 1" 0 "Description 2"
+VAL_ 123 State1 123 "Description 3" 0 "Description 4")");
+
+
+    auto parser = libdbc::DbcParser();
+    parser.parse_file(filename);
+
+    REQUIRE(parser.get_messages().size() == 1);
+    REQUIRE(parser.get_messages().at(0).getSignals().size() == 2);
+
+    REQUIRE(parser.get_messages().at(0).getSignals().at(0).svDescriptions.size() == 2);
+    REQUIRE(parser.get_messages().at(0).getSignals().at(1).svDescriptions.size() == 2);
+
+    const auto signal = parser.get_messages().at(0).getSignals().at(0);
+    REQUIRE(signal.svDescriptions.at(0).value == 123);
+    REQUIRE(signal.svDescriptions.at(0).description == "Description 1");
+    REQUIRE(signal.svDescriptions.at(1).value == 0);
+    REQUIRE(signal.svDescriptions.at(1).description == "Description 2");
+
+    const auto signal2 = parser.get_messages().at(0).getSignals().at(0);
+    REQUIRE(signal2.svDescriptions.at(0).value == 123);
+    REQUIRE(signal2.svDescriptions.at(0).description == "Description 3");
+    REQUIRE(signal2.svDescriptions.at(1).value == 0);
+    REQUIRE(signal2.svDescriptions.at(1).description == "Description 4");
+
+}