- Add -Wformat to emperor_pg CFLAGS since pg-config --cflags returns

-Wformat-security and gcc complains about it's exclusion

OBS-URL: https://build.opensuse.org/package/show/server:http/uwsgi?expand=0&rev=14

uwsgi.spec

@@ -40,6 +40,8 @@ Patch1:         uwsgi-1.9.11-no-LD_RUN_PATH.patch
 Patch2:         uwsgi-1.9.13-objc_gc-no-fobjc-gc.patch
 # PATCH-FIX-OPENSUSE uwsgi-1.9.11-systemd_logger-old_systemd.patch - Older systemd in 12.2 does not implicity include syslog.h
 Patch3:         uwsgi-1.9.11-systemd_logger-old_systemd.patch
+# PATCH-FIX-OPENSUSE uwsgi-1.9.13-emperor_pg-Wformat.patch - gcc complains about lack of -Wformat with -Wformat-security from pg_config
+Patch4:         uwsgi-1.9.13-emperor_pg-Wformat.patch
 %if 0%{?suse_version} > 1210
 BuildRequires:  erlang
 %endif
@@ -387,6 +389,7 @@ This package contains support for rendering XML content using XSLT.
 %patch1 -p1
 %patch2 -p1
 %patch3 -p1
+%patch4 -p1
 # Generate a config that builds all plugins except for examples and stuff we
 # can't satisfy the requirements for or are just broken
 excluded_plugins=""