Bug 384350 - Don't remove HKLM\Software\Clients\StartMenuInternet\FIREFOX.EXE key during reinstall / update. r=sspitzer

browser/installer/windows/nsis/shared.nsh

@@ -170,8 +170,7 @@
   ${StrFilter} "${FileMainEXE}" "+" "" "" $R9
 
   StrCpy $0 "Software\Clients\StartMenuInternet\$R9"
-  ; Remove existing keys so we only have our settings
-  DeleteRegKey HKLM "$0"
+
   WriteRegStr HKLM "$0" "" "${BrandFullName}"
 
   WriteRegStr HKLM "$0\DefaultIcon" "" "$8,0"