Remove stale comment, and fix whitespace issue

Signed-off-by: Tom Cosgrove <tom.cosgrove@arm.com>
diff --git a/tests/suites/test_suite_mpi.function b/tests/suites/test_suite_mpi.function
index dcc869f..40c302b 100644
--- a/tests/suites/test_suite_mpi.function
+++ b/tests/suites/test_suite_mpi.function
@@ -2008,7 +2008,7 @@
      * The data file contains the expected result for sizeof(mbedtls_mpi_uint) == 8;
      * for sizeof(mbedtls_mpi_uint) == 4 it's just the LSW of this.
      */
-    TEST_ASSERT( mm.n == 1  || mm.n == 2);
+    TEST_ASSERT( mm.n == 1  || mm.n == 2 );
 
     /* All of the inputs are +ve (or zero) */
     TEST_EQUAL( N.s, 1 );