fix whitespace

Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
diff --git a/tests/suites/test_suite_ecp.function b/tests/suites/test_suite_ecp.function
index dd2306f..28a6398 100644
--- a/tests/suites/test_suite_ecp.function
+++ b/tests/suites/test_suite_ecp.function
@@ -1079,7 +1079,7 @@
     // check sign bits are well-formed (i.e. 1 or -1) - see #5810
     TEST_ASSERT( grp.N.s == -1 || grp.N.s == 1);
     TEST_ASSERT( expected_n.s == -1 || expected_n.s == 1);
-    
+
     TEST_ASSERT( mbedtls_mpi_cmp_mpi( &grp.N, &expected_n ) == 0 );
 
 exit: