Fixed #1103 (false positive: uninitialized variable when using references)

lib/checkother.cpp

@@ -1335,6 +1335,12 @@ private:
 
             if (Token::simpleMatch(tok.previous(), "="))
             {
+                if (Token::Match(tok.tokAt(-3), "& %var% ="))
+                {
+                    bailOut(checks);
+                    return &tok;
+                }
+
                 if (!Token::Match(tok.tokAt(-3), ". %var% ="))
                 {
                     if (!Token::Match(tok.tokAt(-3), "[;{}] %var% ="))

test/testother.cpp

@@ -1258,6 +1258,16 @@ private:
                        "    } = { 0, 0 };\n"
                        "}\n");
         ASSERT_EQUALS("", errout.str());
+
+        // references..
+        checkUninitVar("void f()\n"
+                       "{\n"
+                       "    int a;\n"
+                       "    int &b = a;\n"
+                       "    b = 0;\n"
+                       "    int x = a;\n"
+                       "}\n");
+        ASSERT_EQUALS("", errout.str());
     }