RDKTV-34129: [WebKitBrowser] Use SIGHUP for suspended web process

For suspended callsing use SIGHUP to kill unresponsive WebProcess
(instead of SIGFPE) to skip minidump report.

In suspended state webkit browser plugin kills web process
immediately on the very first unresponsiveness that produces
false crash reports.

Reason for change: Fix crash report on browser shutdown
Test Procedure: Webapps smoke testing (launch and exit)
Priority: P1
Risks: Low

Signed-off-by: Andrzej Surdej <[email protected]>

Author: asurdej-comcast

WebKitBrowser/WebKitImplementation.cpp

@@ -3531,8 +3531,9 @@ static GSourceFuncs _handlerIntervention =
                 if (_unresponsiveReplyNum <= kWebProcessUnresponsiveReplyDefaultLimit) {
                     _unresponsiveReplyNum = kWebProcessUnresponsiveReplyDefaultLimit;
                     Logging::DumpSystemFiles(webprocessPID);
-                    if (syscall(__NR_tgkill, webprocessPID, webprocessPID, SIGFPE) == -1) {
-                        SYSLOG(Logging::Error, (_T("tgkill failed, signal=%d process=%u errno=%d (%s)"), SIGFPE, webprocessPID, errno, strerror(errno)));
+                    // Kill with SIGHUP with no coredump/minidump
+                    if (syscall(__NR_tgkill, webprocessPID, webprocessPID, SIGHUP) == -1) {
+                        SYSLOG(Logging::Error, (_T("tgkill failed, signal=%d process=%u errno=%d (%s)"), SIGHUP, webprocessPID, errno, strerror(errno)));
                     }
                 } else {
                     DeactivateBrowser(PluginHost::IShell::FAILURE);