Fix #11795 debug: simplifyUsing: unmatched body end (#5198)

Author: chrchr-github

lib/tokenize.cpp

@@ -3251,7 +3251,7 @@ bool Tokenizer::simplifyUsing()
                 skip = true;
                 simplifyUsingError(usingStart, usingEnd);
             }
-            tok1 = after;
+            tok1 = after->previous();
         }
 
         if (!skip)

test/testsimplifyusing.cpp

@@ -72,6 +72,7 @@ class TestSimplifyUsing : public TestFixture {
         TEST_CASE(simplifyUsing25);
         TEST_CASE(simplifyUsing26); // #11090
         TEST_CASE(simplifyUsing27);
+        TEST_CASE(simplifyUsing28);
 
         TEST_CASE(simplifyUsing8970);
         TEST_CASE(simplifyUsing8971);
@@ -675,6 +676,16 @@ class TestSimplifyUsing : public TestFixture {
         ASSERT_EQUALS(expected, tok(code));
     }
 
+    void simplifyUsing28() { // #11795
+        const char code[] = "void f() {\n"
+                            "    using T = int;\n"
+                            "    T* p{ new T };\n"
+                            "}\n";
+        const char expected[] = "void f ( ) { int * p { new int } ; }";
+        ASSERT_EQUALS(expected, tok(code, cppcheck::Platform::Type::Native, /*debugwarnings*/ true));
+        ASSERT_EQUALS("", errout.str());
+    }
+
     void simplifyUsing8970() {
         const char code[] = "using V = std::vector<int>;\n"
                             "struct A {\n"