wxwidgets.cfg: Added support for more interfaces, found by daca@home

cfg/wxwidgets.cfg

@@ -9125,6 +9125,18 @@
     </arg>
     <arg nr="2" direction="in"/>
   </function>
+  <!-- virtual int wxListBox::FindString( const wxString & s, bool bCase = false ) const -->
+  <function name="wxListBox::FindString">
+    <noreturn>false</noreturn>
+    <leak-ignore/>
+    <use-retval/>
+    <returnValue type="int"/>
+    <const/>
+    <arg nr="1" direction="in"/>
+    <arg nr="2" default="false" direction="in">
+      <not-uninit/>
+    </arg>
+  </function>
   <!-- virtual void wxListBox::SetSelection(int n) -->
   <function name="wxListBox::SetSelection">
     <noreturn>false</noreturn>