Fix crash on exit using KDE interface

This is slightly modified version of patch from Lubos Lunak
<llunak@suse.cz>.

This fixes downstream bugs:
https://bugs.gentoo.org/show_bug.cgi?id=394533
https://bugs.launchpad.net/bugs/925049

vcl/unx/generic/plugadapt/salplug.cxx

@@ -99,8 +99,10 @@ static SalInstance* tryInstance( const OUString& rModuleBase, bool bForce = fals
                 /*
                  * #i109007# KDE3 seems to have the same problem; an atexit cleanup
                  * handler, which cannot be resolved anymore if the plugin is already unloaded.
+		 * Same applies for kde4.
                  */
-                else if( rModuleBase.equalsAsciiL(RTL_CONSTASCII_STRINGPARAM("kde")) )
+                else if( rModuleBase.equalsAsciiL(RTL_CONSTASCII_STRINGPARAM("kde")) ||
+                    rModuleBase.equalsAsciiL(RTL_CONSTASCII_STRINGPARAM("kde4")) )
                 {
                     pCloseModule = NULL;
                 }