don't call release() on non-owned buffer in wchar_t build (closes #10964); copy utf8_str() return value in ASCII one

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@61334 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/gtk/aboutdlg.cpp

@@ -54,11 +54,19 @@ public:
 
         for ( size_t n = 0; n < m_count; n++ )
         {
-#if wxUSE_UNICODE_UTF8
-            m_strings[n] = a[n].utf8_str();
-#else
+#if wxUSE_UNICODE
+            // notice that there is no need to copy the string pointer here
+            // because this class is used only as a temporary and during its
+            // existence the pointer persists in wxString which uses it either
+            // for internal representation (in wxUSE_UNICODE_UTF8 case) or as
+            // cached m_convertedToChar (in wxUSE_UNICODE_WCHAR case)
+            m_strings[n] = wxGTK_CONV_SYS(a[n]);
+#else // !wxUSE_UNICODE
+            // and in ANSI build we can simply borrow the pointer from
+            // wxCharBuffer (which owns it in this case) instead of copying it
+            // but we then become responsible for freeing it
             m_strings[n] = wxGTK_CONV_SYS(a[n]).release();
-#endif
+#endif // wxUSE_UNICODE/!wxUSE_UNICODE
         }
 
         // array must be NULL-terminated
@@ -69,7 +77,7 @@ public:
 
     ~GtkArray()
     {
-#if !wxUSE_UNICODE_UTF8
+#if !wxUSE_UNICODE
         for ( size_t n = 0; n < m_count; n++ )
             free(const_cast<gchar *>(m_strings[n]));
 #endif