Fix patching distribution file

SPECS/firefox.spec

@@ -1746,11 +1746,11 @@ ln -s %{_datadir}/myspell %{buildroot}%{mozappdir}/dictionaries
 ##%%{__cp} %%{SOURCE26} %{buildroot}%{mozappdir}/distribution
 
 # CentOS
-%if 0%{?centos}
+#%if 0%{?centos}
-%{__sed} -ie 's/redhat/centos/g' %{buildroot}%{mozappdir}/distribution
+#%{__sed} -ie 's/redhat/centos/g' %{buildroot}%{mozappdir}/distribution
-(source  /etc/os-release; %{__sed} -ie 's/Red Hat Enterprise Linux/$NAME/' %{buildroot}%{mozappdir}/distribution)
+#(source  /etc/os-release; %{__sed} -ie 's/Red Hat Enterprise Linux/$NAME/' %{buildroot}%{mozappdir}/distribution)
-cat %{buildroot}%{mozappdir}/distribution
+#cat %{buildroot}%{mozappdir}/distribution
-%endif
+#%endif
 
 # Install appdata file
 mkdir -p %{buildroot}%{_datadir}/metainfo