fix some code with obvious wrong coding style

Reviewed-by: Tomas Mraz <tomas@openssl.org>
Reviewed-by: Richard Levitte <levitte@openssl.org>
Reviewed-by: Paul Dale <pauli@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/16918)

test/bftest.c

diff --git a/test/bftest.c b/test/bftest.c
index 8da47bc..9a197b4 100644
--- a/test/bftest.c
+++ b/test/bftest.c
@@ -465,7 +465,7 @@
 # endif
 
     while ((o = opt_next()) != OPT_EOF) {
-        switch(o) {
+        switch (o) {
         case OPT_PRINT:
             print_test_data();
             return 1;