[gdbinit] Do not enable ASLR if not possible.

The `set disable-randomization off` command may fail on some platforms,
such as the `rr` debugger. We can just ignore the error and carry on.

Change-Id: I9b8dae183a9852178a3d3411172bf3aef173c995
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3602519
Auto-Submit: Pierre Langlois <pierre.langlois@arm.com>
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80143}

tools/gdbinit

@@ -158,7 +158,15 @@ try:
 except gdb.error:
   pass
 end
-set disable-randomization off
+
+# Configuring ASLR may not be possible on some platforms, such running via the
+# `rr` debuggger.
+python
+try:
+  gdb.execute("set disable-randomization off")
+except gdb.error:
+  pass
+end
 
 # Install a handler whenever the debugger stops due to a signal. It walks up the
 # stack looking for V8_Dcheck / V8_Fatal / OS::DebugBreak frame and moves the