Fixed #6730 (ValueFlow: inner scope does not return (continue,throw))

lib/valueflow.cpp

@@ -262,7 +262,7 @@ static bool isReturn(const Token *tok)
             return true;
         // return/goto statement
         prev = prev->previous();
-        while (prev && !Token::Match(prev, ";|{|}|return|goto|throw"))
+        while (prev && !Token::Match(prev, ";|{|}|return|goto|throw|continue|break"))
             prev = prev->previous();
         return prev && prev->isName();
     }

test/testvalueflow.cpp

@@ -1283,6 +1283,14 @@ private:
                "}";
         ASSERT_EQUALS(false, testValueOfX(code, 5U, 5));
 
+        code = "void f(int x) {\n" // #6730
+               "  if (x == 5) {\n"
+               "    if (z) continue; else throw e;\n"
+               "  }\n"
+               "  a = x;\n"
+               "}";
+        ASSERT_EQUALS(false, testValueOfX(code, 5U, 5));
+
         // TODO: float
         code = "void f(float x) {\n"
                "  if (x == 0.5) {}\n"