Follow Mbed OS coding style

Author: Arto Kinnunen

source/coap_security_handler.c

@@ -103,8 +103,9 @@ static int coap_security_handler_init(coap_security_t *sec)
 #endif
 
 #if defined(MBEDTLS_PLATFORM_C)
-    if (mbedtls_platform_setup(NULL) != 0)
+    if (mbedtls_platform_setup(NULL) != 0) {
         return -1;
+    }
 #endif /* MBEDTLS_PLATFORM_C */
 
     mbedtls_ssl_init(&sec->_ssl);

test/coap-service/unittest/stub/mbedtls_stub.c

@@ -388,14 +388,14 @@ void mbedtls_strerror(int ret, char *buf, size_t buflen)
 {
 }
 
-int mbedtls_platform_setup( mbedtls_platform_context *ctx )
+int mbedtls_platform_setup(mbedtls_platform_context *ctx)
 {
     (void)ctx;
 
-    return( 0 );
+    return (0);
 }
 
-void mbedtls_platform_teardown( mbedtls_platform_context *ctx )
+void mbedtls_platform_teardown(mbedtls_platform_context *ctx)
 {
     (void)ctx;
 }