std.cfg: Fixed FP in std::string:swap().

Author: orbitcowboy

cfg/std.cfg

@@ -5917,9 +5917,7 @@ The obsolete function 'gets' is called. With 'gets' you'll get a buffer overrun
   <!-- void swap (string& str); -->
   <function name="std::string::swap">
     <noreturn>false</noreturn>
-    <arg nr="1">
-      <not-uninit/>
-    </arg>
+    <arg nr="1"/>
   </function>
   <function name="std::string::c_str,std::string::data">
     <noreturn>false</noreturn>