WaE: rewrite call of rtl::OUString::operator= with empty string constant ...

... argument as call of rtl::OUString::clear.

Change-Id: I3877a7034edc2cff0509c8a57170228fa1c68685

svx/source/tbxctrls/Palette.cxx

@@ -114,7 +114,7 @@ void PaletteASE::LoadPalette()
             maName = aName;
             // Is there color data? (shouldn't happen in a start block, but check anyway)
             if (nChunkSize > ((nChars * 2) + 2))
-                aName = "";
+                aName.clear();
             else
                 continue;
         }