Support lambdas in simplifyCompoundAssignment (#7571)

lib/tokenize.cpp

@@ -4659,7 +4659,7 @@ void Tokenizer::simplifyCompoundAssignment()
                 // Only enclose rhs in parentheses if there is some operator
                 bool someOperator = false;
                 for (Token *tok2 = tok->next(); tok2; tok2 = tok2->next()) {
-                    if (tok2->str() == "(")
+                    if (tok2->link() && Token::Match(tok2, "{|[|("))
                         tok2 = tok2->link();
 
                     if (Token::Match(tok2->next(), "[;)]")) {

test/testsimplifytokens.cpp

@@ -362,6 +362,9 @@ private:
 
         // #3469
         ASSERT_EQUALS("; a = a + ( b = 1 ) ;", tok("; a += b = 1;"));
+
+        // #7571
+        ASSERT_EQUALS("; foo = foo + [ & ] ( ) { } ;", tok("; foo += [&]() {int i;};"));
     }