windows.cfg: Added support for GetCommState().

cfg/windows.cfg

@@ -1640,6 +1640,17 @@
       <not-uninit/>
     </arg>
   </function>
+  <!-- BOOL GetCommState(HANDLE hFile, LPDCB  lpDCB); -->
+  <function name="GetCommState">
+    <noreturn>false</noreturn>
+    <returnValue type="BOOL"/>
+    <arg nr="1" direction="in">
+      <not-uninit/>
+    </arg>
+    <arg nr="2" direction="out">
+      <not-null/>
+    </arg>
+  </function>
   <!-- BOOL WINAPI BuildCommDCB(
   _In_   LPCTSTR lpDef,
   _Out_  LPDCB lpDCB); -->