Add missing "end" to gdb macro

tools/gdbinit

 # Copyright 2014 the V8 project authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # Print HeapObjects.
 define job
 call _v8_internal_Print_Object((void*)($arg0))
 end
 document job
 Print a v8 JavaScript object
@@ skipping 54 matching lines @@
 end
 document jss
 Skip the jitted stack on x64 to where we entered JS last.
 Usage: jss
 end
 
 # Print stack trace with assertion scopes.
 define bta
 python
 import re
-frame_re = re.compile("^#(\d+).* in (\S+) .+ at (.+)")
+frame_re = re.compile("^#(\d+)\s*(?:0x[a-f\d]+ in )?(.+) \(.+ at (.+)")
 assert_re = re.compile("^\s*(\S+) = .+<v8::internal::Per\w+AssertType::(\w+)_ASSERT, (false|true)>")
 btl = gdb.execute("backtrace full", to_string = True).splitlines()
 for l in btl:
   match = frame_re.match(l)
   if match:
     print("[%-2s] %-60s %-40s" % (match.group(1), match.group(2), match.group(3)))
   match = assert_re.match(l)
   if match:
     if match.group(3) == "false":
       prefix = "Disallow"
       color = "\033[91m"
     else:
       prefix = "Allow"
       color = "\033[92m"
     print("%s -> %s %s (%s)\033[0m" % (color, prefix, match.group(2), match.group(1)))
 end
+end
 document bta
 Print stack trace with assertion scopes
 Usage: bta
 end
 
 set disassembly-flavor intel
 set disable-randomization off