Fix 10589: False positive: danglingLifetime for moved unique ptr (#3547)

Author: pfultz2

lib/valueflow.cpp

@@ -2515,6 +2515,8 @@ struct SingleValueFlowAnalyzer : ValueFlowAnalyzer {
     {
         if (value.isUninitValue())
             return false;
+        if (value.isLifetimeValue())
+            return false;
         return true;
     }
 

test/testautovariables.cpp

@@ -2465,6 +2465,15 @@ class TestAutoVariables : public TestFixture {
               "}\n",
               true);
         ASSERT_EQUALS("", errout.str());
+
+        check("struct A {\n"
+              "    std::vector<std::unique_ptr<int>> mA;\n"
+              "    void f(std::unique_ptr<int> a) {\n"
+              "        auto x = a.get();\n"
+              "        mA.push_back(std::move(a));\n"
+              "    }\n"
+              "};\n");
+        ASSERT_EQUALS("", errout.str());
     }
 
     void danglingLifetimeContainerView()