Use wxVector::shrink_to_fit() directly

Don't use deprecated wxShrinkToFit() as now wxVector always has this
member function because it is available even in STL build when using
C++11.

include/wx/dynarray.h

@@ -108,11 +108,7 @@ public:
     void Empty() { this->clear(); }
     void Clear() { this->clear(); }
     void Alloc(size_t uiSize) { this->reserve(uiSize); }
-
-    void Shrink()
-    {
-        wxShrinkToFit(*this);
-    }
+    void Shrink() { this->shrink_to_fit(); }
 
     size_t GetCount() const { return this->size(); }
     void SetCount(size_t n, T v = T()) { this->resize(n, v); }

src/generic/listctrl.cpp

@@ -1728,7 +1728,7 @@ wxListLineData *wxListMainWindow::GetDummyLine() const
 
         // don't waste extra memory -- there never going to be anything
         // else/more in this array
-        wxShrinkToFit(self->m_lines);
+        self->m_lines.shrink_to_fit();
     }
 
     return m_lines[0];