No real changes, just use wxString::clear() instead of assignment.

Consistently use clear() everywhere instead of assigning wxEmptyString in some
places and wxT("") in some others to a string in order to clear it.

See #15091.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@73632 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/common/filename.cpp

@@ -608,11 +608,10 @@ void wxFileName::AssignDir(const wxString& dir, wxPathFormat format)
 
 void wxFileName::Clear()
 {
-    m_dirs.Clear();
-
-    m_volume =
-    m_name =
-    m_ext = wxEmptyString;
+    m_dirs.clear();
+    m_volume.clear();
+    m_name.clear();
+    m_ext.clear();
 
     // we don't have any absolute path for now
     m_relative = true;
@@ -1912,7 +1911,7 @@ wxString wxFileName::GetForbiddenChars(wxPathFormat format)
         case wxPATH_MAC:
             // On a Mac even names with * and ? are allowed (Tested with OS
             // 9.2.1 and OS X 10.2.5)
-            strForbiddenChars = wxEmptyString;
+            strForbiddenChars.clear();
             break;
 
         case wxPATH_DOS:
@@ -2294,7 +2293,7 @@ wxString wxFileName::GetLongPath() const
                   GetVolumeSeparator(wxPATH_DOS) +
                   GetPathSeparator(wxPATH_DOS);
     else
-        pathOut = wxEmptyString;
+        pathOut.clear();
 
     wxArrayString dirs = GetDirs();
     dirs.Add(GetFullName());