Fix code style and clarify issue comment

* remove unneeded constants
* clarify comment reference to issue 183
* add additional reference comment
* fix brace spacing issues
diff --git a/tests/suites/test_suite_psa_crypto.function b/tests/suites/test_suite_psa_crypto.function
index 528857b..56a23fe 100644
--- a/tests/suites/test_suite_psa_crypto.function
+++ b/tests/suites/test_suite_psa_crypto.function
@@ -3091,9 +3091,9 @@
     psa_key_slot_t base_key = 1;
     size_t key_type = PSA_KEY_TYPE_DERIVE;
     psa_crypto_generator_t generator = PSA_CRYPTO_GENERATOR_INIT;
-    psa_algorithm_t alg = PSA_ALG_HKDF(PSA_ALG_SHA_256);
-    size_t capacity = 42;
+    psa_algorithm_t alg = PSA_ALG_HKDF( PSA_ALG_SHA_256 );
     uint8_t buffer[42];
+    size_t capacity = sizeof( buffer );
     const uint8_t key_data[22] = { 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b,
                                    0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b,
                                    0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b};
@@ -3107,7 +3107,7 @@
 
     TEST_ASSERT( psa_import_key( base_key, key_type,
                                  key_data,
-                                 sizeof(key_data) ) == PSA_SUCCESS );
+                                 sizeof( key_data ) ) == PSA_SUCCESS );
 
     /* valid key derivation */
     TEST_ASSERT(  psa_key_derivation( &generator, base_key, alg,
@@ -3145,18 +3145,18 @@
     psa_crypto_generator_t generator = PSA_CRYPTO_GENERATOR_INIT;
 
     TEST_ASSERT( psa_generator_read( &generator, output_buffer, buffer_size )
-                 == PSA_ERROR_INSUFFICIENT_CAPACITY );
+                 == PSA_ERROR_INSUFFICIENT_CAPACITY ); // should be PSA_ERROR_BAD_STATE:#183
 
     TEST_ASSERT( psa_get_generator_capacity( &generator, &capacity )
-                 == PSA_SUCCESS ); // should be PSA_ERROR_BAD_STATE:issue opened
+                 == PSA_SUCCESS ); // should be PSA_ERROR_BAD_STATE:#183
 
     TEST_ASSERT( psa_generator_abort( &generator ) == PSA_SUCCESS );
 
     TEST_ASSERT( psa_generator_read( &generator, output_buffer, buffer_size )
-                 == PSA_ERROR_INSUFFICIENT_CAPACITY );
+                 == PSA_ERROR_INSUFFICIENT_CAPACITY ); // should be PSA_ERROR_BAD_STATE:#183
 
     TEST_ASSERT( psa_get_generator_capacity( &generator, &capacity )
-                 == PSA_SUCCESS );// should be PSA_ERROR_BAD_STATE:issue opened
+                 == PSA_SUCCESS );// should be PSA_ERROR_BAD_STATE:#183
 
 exit:
     psa_generator_abort( &generator );