Added build fix, remove -Wno-format build flags

fedora-build.patch

@@ -0,0 +1,23 @@
+diff -up firefox-54.0/media/libyuv/libyuv/tools_libyuv/autoroller/unittests/testdata/DEPS.chromium.old firefox-54.0/media/libyuv/libyuv/tools_libyuv/autoroller/unittests/testdata/DEPS.chromium
+diff -up firefox-54.0/media/mtransport/third_party/nICEr/nicer.gyp.old firefox-54.0/media/mtransport/third_party/nICEr/nicer.gyp
+--- firefox-54.0/media/mtransport/third_party/nICEr/nicer.gyp.old	2017-06-08 14:59:08.786996664 +0200
++++ firefox-54.0/media/mtransport/third_party/nICEr/nicer.gyp	2017-06-08 14:59:22.642946570 +0200
+@@ -211,7 +211,6 @@
+                     '-Wno-parentheses',
+                     '-Wno-strict-prototypes',
+                     '-Wmissing-prototypes',
+-                    '-Wno-format',
+                  ],
+                  'defines' : [
+                      'LINUX',
+diff -up firefox-54.0/media/mtransport/third_party/nrappkit/nrappkit.gyp.build firefox-54.0/media/mtransport/third_party/nrappkit/nrappkit.gyp
+--- firefox-54.0/media/mtransport/third_party/nrappkit/nrappkit.gyp.build	2017-06-08 15:08:03.627063097 +0200
++++ firefox-54.0/media/mtransport/third_party/nrappkit/nrappkit.gyp	2017-06-08 15:08:15.657019606 +0200
+@@ -206,7 +206,6 @@
+                      '-Wno-parentheses',
+                      '-Wno-strict-prototypes',
+                      '-Wmissing-prototypes',
+-                     '-Wno-format',
+                  ],
+                  'defines' : [
+                      'LINUX',

firefox.spec

@@ -124,6 +124,7 @@ Patch26:        build-icu-big-endian.patch
 Patch27:        mozilla-1335250.patch
 Patch28:        build-1360521-missing-cheddar.patch
 Patch29:        build-big-endian.patch
+Patch30:        fedora-build.patch
 
 # Fedora specific patches
 # Unable to install addons from https pages
@@ -297,6 +298,7 @@ This package contains results of tests executed during build.
 %endif
 #%patch28 -p2 -b .1360521-missing-cheddar
 %patch29 -p1 -b .big-endian
+%patch30 -p1 -b .fedora-build
 
 %patch3  -p1 -b .arm