CPP: Add a test where continue is used in a switch to exit the loop.

cpp/ql/test/query-tests/Likely Bugs/ContinueInFalseLoop/ContinueInFalseLoop.expected

@@ -1,2 +1,3 @@
 | test.cpp:13:4:13:12 | continue; | This 'continue' never re-runs the loop - the $@ is always false. | test.cpp:16:11:16:15 | 0 | loop condition |
 | test.cpp:59:5:59:13 | continue; | This 'continue' never re-runs the loop - the $@ is always false. | test.cpp:62:12:62:16 | 0 | loop condition |
+| test.cpp:88:4:88:12 | continue; | This 'continue' never re-runs the loop - the $@ is always false. | test.cpp:93:11:93:11 | 0 | loop condition |

cpp/ql/test/query-tests/Likely Bugs/ContinueInFalseLoop/test.cpp

@@ -1,7 +1,7 @@
 
 bool cond();
 
-void test1()
+void test1(int x)
 {
 	int i;
 
@@ -72,4 +72,23 @@ void test1()
 				break;
 		} while (true);
 	} while (false);
+
+	do
+	{
+		switch (x)
+		{
+		case 1:
+			// do [1]
+
+			break; // break out of the switch
+
+		default:
+			// do [2]
+
+			continue; // break out of the loop entirely, skipping [3] [FALSE POSITIVE]
+		};
+
+		// do [3]
+
+	} while (0);
 }