Hack wrapper to work around segfault (brave/brave-browser#4142)

The `brave` binary returns a non-zero error code and that causes
the wrapper to return a non-zero error code too. Since it's not
possible to override the error code with an `exec` call (`exec`
will terminate the shell immediately with a successful return
value), we need to keep the original shell around so that we can
hide the true return value of the `brave` binary.

This hack should be removed once we have fixed the crash.

patches/chrome-installer-linux-common-wrapper.patch

@@ -0,0 +1,11 @@
+diff --git a/chrome/installer/linux/common/wrapper b/chrome/installer/linux/common/wrapper
+index dbbeb27ea037ae1046c38f4006ddccabfeea9e18..fa51c4947d0261bb0138d54f1e807715bba0d345 100755
+--- a/chrome/installer/linux/common/wrapper
++++ b/chrome/installer/linux/common/wrapper
+@@ -45,5 +45,4 @@ exec < /dev/null
+ exec > >(exec cat)
+ exec 2> >(exec cat >&2)
+
+-# Note: exec -a below is a bashism.
+-exec -a "$0" "$HERE/@@PROGNAME@@" "$@"
++"$HERE/@@PROGNAME@@" "$@" || true