ICU-20795 BRS test without data task: Adds a status check after Locale instance
creation. Test causes segmentation fault if it tries to continue beyond failed
instance creation.
segmentation fault if instance creation fails
diff --git a/icu4c/source/test/intltest/dtfmttst.cpp b/icu4c/source/test/intltest/dtfmttst.cpp
index 128edba..0f6d1d1 100644
--- a/icu4c/source/test/intltest/dtfmttst.cpp
+++ b/icu4c/source/test/intltest/dtfmttst.cpp
@@ -5551,6 +5551,7 @@
                "hours=h23;lb=strict;lw=normal;measure=metric;numbers=latn;"
                "rg=atzzzz;sd=atat1;ss=none;timezone=Europe/Vienna"),
         status);
+    ASSERT_OK(status);
     sdf.adoptCalendar(Calendar::createInstance(status));
 }