Fix for release builds deleting lexer test script strings before being finished with it

tests/parser/LexerTests.cpp

@@ -8,16 +8,16 @@ TEST_CASE( "When at end of script return terminator", "[lexer]" ) {
 }
 
 TEST_CASE( "Peek doesn't advance", "[lexer]" ) {
-    auto script = "5 + 5";
-    Lexer lexer = Lexer(script, nullptr);
+    auto script = new string("5 + 5"); // Create as reference to ensure the compiler plays nice with it in release builds
+    Lexer lexer = Lexer(*script, nullptr);
     REQUIRE(lexer.Peek() == '5');
     REQUIRE(lexer.Peek() == '5');
     REQUIRE(lexer.Peek() == '5');
 }
 
 TEST_CASE( "Next does advance", "[lexer]" ) {
-    auto script = "5 + 5";
-    Lexer lexer = Lexer(script, nullptr);
+    auto script = new string("5 + 5"); // Create as reference to ensure the compiler plays nice with it in release builds
+    Lexer lexer = Lexer(*script, nullptr);
     REQUIRE(lexer.Next() == '5');
     REQUIRE(lexer.Next() == ' ');
     REQUIRE(lexer.Next() == '+');