Build fix

firefox.spec

@@ -187,6 +187,7 @@ Patch569:        mozilla-1465371.patch
 Patch570:        mozilla-1467125.patch
 Patch571:        mozilla-1468670.patch
 Patch572:        mozilla-1467128.patch
+Patch573:        rb255772.patch
 
 # Debian patches
 Patch500:        mozilla-440908.patch
@@ -401,6 +402,7 @@ This package contains results of tests executed during build.
 %patch570 -p1 -b .mozilla-1467125
 %patch571 -p1 -b .mozilla-1468670
 %patch572 -p1 -b .mozilla-1467128
+%patch573 -p1 -b .rb255772
 %endif
 
 %{__rm} -f .mozconfig

rb255772.patch

@@ -0,0 +1,23 @@
+diff --git a/widget/xremoteclient/DBusRemoteClient.cpp b/widget/xremoteclient/DBusRemoteClient.cpp
+--- a/widget/xremoteclient/DBusRemoteClient.cpp
++++ b/widget/xremoteclient/DBusRemoteClient.cpp
+@@ -137,17 +137,17 @@ DBusRemoteClient::GetRemoteDestinationNa
+                                                             profileName.get());
+     if (aDestinationName.Length() > DBUS_MAXIMUM_NAME_LENGTH)
+       aDestinationName.Truncate(DBUS_MAXIMUM_NAME_LENGTH);
+ 
+     static auto sDBusValidateBusName =
+       (bool (*)(const char *, DBusError *))
+       dlsym(RTLD_DEFAULT, "dbus_validate_bus_name");
+     if (!sDBusValidateBusName) {
+-      return false
++      return false;
+     }
+ 
+     if (!sDBusValidateBusName(aDestinationName.get(), nullptr)) {
+       // We don't have a valid busName yet - try to create a default one.
+       aDestinationName = nsPrintfCString("org.mozilla.%s.%s", aProgram,
+                                                              "default");
+       if (!sDBusValidateBusName(aDestinationName.get(), nullptr)) {
+         // We failed completelly to get a valid bus name - just quit
+