changed wxCondition API to take a reference, not pointer, to wxMutex

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@14909 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

docs/latex/wx/conditn.tex

@@ -53,7 +53,7 @@ private:
 int main()
 {
     wxMutex mutex;
-    wxCondition condition(&mutex);
+    wxCondition condition(mutex);
 
     for ( int i = 0; i < 10; i++ )
     {
@@ -90,9 +90,10 @@ None.
 
 \membersection{wxCondition::wxCondition}\label{wxconditionconstr}
 
-\func{}{wxCondition}{\param{wxMutex }{*mutex}}
+\func{}{wxCondition}{\param{wxMutex\& }{mutex}}
 
-Default and only constructor. The {\it mutex} must be non {\tt NULL}.
+Default and only constructor. The {\it mutex} must be locked by the caller
+before calling \helpref{Wait}{wxconditionwait} function.
 
 \membersection{wxCondition::\destruct{wxCondition}}