Remove assertion for a variable that doesn't exist. Patch by Alfred Peng

<alfred.peng>.  r=me.

http://groups.google.com/group/google-breakpad-dev/browse_thread/thread/e5738aed43450365


git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@223 4c0a9323-5329-0410-9bdc-e9ce6186880e

src/client/solaris/handler/minidump_generator.cc

@@ -533,7 +533,6 @@ void* MinidumpGenerator::Write() {
 bool MinidumpGenerator::WriteMinidumpToFile(const char *file_pathname,
                                             int signo) {
   assert(file_pathname != NULL);
-  assert(stack_ != NULL);
 
   if (file_pathname == NULL)
     return false;