Potential fix for pull request finding

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

Author: sandboxcoder

installer.nsh

@@ -4,10 +4,14 @@
 ; URLs in the license text are displayed as plain text, not clickable links.
 !define MUI_PAGE_CUSTOMFUNCTION_SHOW DisableLicenseAutoUrl
 Function DisableLicenseAutoUrl
+  Push $0
   ; IDC_LICENSE (1000) is the RichEdit control on the MUI license page.
   ; EM_AUTOURLDETECT = 0x45B: wParam 0 disables auto-detection.
   GetDlgItem $0 $HWNDPARENT 1000
-  System::Call 'user32::SendMessage(i $0, i 0x45B, i 0, i 0)'
+  ${If} $0 != 0
+    System::Call 'user32::SendMessage(i $0, i 0x45B, i 0, i 0)'
+  ${EndIf}
+  Pop $0
 FunctionEnd
 
 !macro customInstall