[LyX/2.3.x] Amend c93b3a24

[Eugene Chornyi]

commit beb69bcf9a09d852a8dbaf0efd52369903818c41
Author: Eugene Chornyi <yu_jin at lyx.org>
Date:   Wed Jul 8 07:58:49 2020 +0200

    Amend c93b3a24
---
 .../Win32/packaging/installer/setup/configure.nsh  |    6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/development/Win32/packaging/installer/setup/configure.nsh b/development/Win32/packaging/installer/setup/configure.nsh
index 27c477f..40722d5 100644
--- a/development/Win32/packaging/installer/setup/configure.nsh
+++ b/development/Win32/packaging/installer/setup/configure.nsh
@@ -60,8 +60,10 @@ Section -InstallData
    DeleteRegKey SHCTX "Software\Microsoft\Windows\CurrentVersion\Uninstall\${APP_NAME}$OldVersionNumber"
    DeleteRegKey SHCTX "SOFTWARE\${APP_NAME}$OldVersionNumber"
    # also delete in the case of an emergency release
-   DeleteRegKey SHCTX "Software\Microsoft\Windows\CurrentVersion\Uninstall\${APP_NAME}$OldVersionNumber1"
-   DeleteRegKey SHCTX "SOFTWARE\${APP_NAME}$OldVersionNumber1"
+   ${For} $7 0 20
+    DeleteRegKey SHCTX "Software\Microsoft\Windows\CurrentVersion\Uninstall\${APP_NAME}$OldVersionNumber$7"
+    DeleteRegKey SHCTX "SOFTWARE\${APP_NAME}\$OldVersionNumber$7"
+   ${Next}
   ${endif}
   
 SectionEnd