Ignore broken pipe / SIGPIPE signal to avoid crash

[pleonex]

Every time I enabled the remote debugger setting, the emulator crashed immediately. Even without running any game. Also, it started to crash on the start-up, without showing the UI yet. In all cases the crash was because a broken pipe (SIGPIPE).

I am running Linux (Fedora 28) and the issue affects to both QT and SDL versions. Tested with the latest commit of master branch.

Thanks @unknownbrackets for suggesting the fix!
The issue is fixed by ignoring the SIGPIPE signal in the send call. The error is still returned as EPIPE so it can be handled without crashing the whole application.

Stacktrace:

Thread 3 "Downloader::Do" received signal SIGPIPE, Broken pipe.
#0  0x00007ffff7bc808e in send () from /lib64/libpthread.so.0
#1  0x00000000008fd8ad in Buffer::FlushSocket (this=0x7fffc7ffe5b0, sock=26) at /lab/romhacking/emulators/ppsspp/ext/native/base/buffer.cpp:146
#2  0x0000000000921ef0 in http::Client::SendRequestWithData (this=0x7fffc7ffe780, method=0x1231eb5 "GET", resource=0x7fffc7ffe8c0 "/version.json", data="", otherHeaders=0x1231e90 "Accept: */*\r\nAccept-Encoding: gzip\r\n", progress=0x206
6540) at /lab/romhacking/emulators/ppsspp/ext/native/net/http_client.cpp:286
#3  0x0000000000921dc0 in http::Client::SendRequest (this=0x7fffc7ffe780, method=0x1231eb5 "GET", resource=0x7fffc7ffe8c0 "/version.json", otherHeaders=0x1231e90 "Accept: */*\r\nAccept-Encoding: gzip\r\n", progress=0x2066540) at /lab/rom
hacking/emulators/ppsspp/ext/native/net/http_client.cpp:263
#4  0x000000000092197d in http::Client::GET (this=0x7fffc7ffe780, resource=0x7fffc7ffe8c0 "/version.json", output=0x2066548, responseHeaders=std::vector of length 0, capacity 0, progress=0x2066540, cancelled=0x20665a6) at /lab/romhacking
/emulators/ppsspp/ext/native/net/http_client.cpp:208
#5  0x0000000000921a75 in http::Client::GET (this=0x7fffc7ffe780, resource=0x7fffc7ffe8c0 "/version.json", output=0x2066548, progress=0x2066540, cancelled=0x20665a6) at /lab/romhacking/emulators/ppsspp/ext/native/net/http_client.cpp:228
#6  0x0000000000922b3a in http::Download::Do (this=0x2066540, self=std::shared_ptr<http::Download> (use count 4, weak count 0) = {...}) at /lab/romhacking/emulators/ppsspp/ext/native/net/http_client.cpp:457