Add missing newlines in two test files

Author: winner245

libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons.alloc/ctor_comp_cont_alloc.pass.cpp

@@ -64,4 +64,4 @@ int main(int, char**) {
 #endif
 
   return 0;
-}
+}

libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons/ctor_comp_container.pass.cpp

@@ -51,4 +51,4 @@ int main(int, char**) {
 #endif
 
   return 0;
-}
+}