Fixed #1138 (improve check: dereferencing uninitialized pointer)

lib/checkother.cpp

@@ -1673,6 +1673,12 @@ private:
                 ExecutionPath::bailOutVar(checks, tok.varId());
                 return &tok;
             }
+
+            if (Token::Match(tok.tokAt(-2), "[,(=] *"))
+            {
+                use(foundError, checks, &tok);
+                return &tok;
+            }
         }
         return &tok;
     }

test/testother.cpp

@@ -991,6 +991,13 @@ private:
                        "}\n");
         ASSERT_EQUALS("[test.cpp:4]: (error) Uninitialized variable: p\n", errout.str());
 
+        checkUninitVar("static void foo()\n"
+                       "{\n"
+                       "    int *x;\n"
+                       "    int y = *x;\n"
+                       "}\n");
+        ASSERT_EQUALS("[test.cpp:4]: (error) Uninitialized variable: x\n", errout.str());
+
         checkUninitVar("static int foo()\n"
                        "{\n"
                        "    int ret;\n"