Avoid unused variable errors in aesgcm_non12iv_test

[padelsbach]

Description

Currently blocking wolfHSM CI with the error below:

cc  -std=c90 -Werror -Wall -Wextra -ffunction-sections -fdata-sections -ggdb -g3 -fsanitize=address -D_POSIX_C_SOURCE=200809L -DWOLFHSM_CFG -DWOLFSSL_USER_SETTINGS -DWOLFHSM_CFG_DEBUG -DWOLFHSM_CFG_DEBUG_VERBOSE -DWC_USE_DEVID=0x5748534D -DWOLFHSM_CFG_ENABLE_AUTHENTICATION -I. -I./config -I./../ -I../../../wolfssl -I../../../ -I../../..//port/posix -I../../..//examples/demo/client -c -o Build/wh_demo_client_wctest.o ../../..//examples/demo/client/wh_demo_client_wctest.c
../../../wolfssl/wolfcrypt/test/test.c: In function ‘aesgcm_non12iv_test’:
../../../wolfssl/wolfcrypt/test/test.c:19220:57: error: unused parameter ‘dec’ [-Werror=unused-parameter]
19220 | static wc_test_ret_t aesgcm_non12iv_test(Aes* enc, Aes* dec)
      |                                                    ~~~~~^~~
cc1: all warnings being treated as errors

Note: wolfHSM tests define BENCH_EMBEDDED which means BENCH_AESGCM_LARGE is undefined and dec is not used.

Testing

How did you test?

Checklist

• added tests
• updated/added doxygen
• updated appropriate READMEs
• Updated manual and documentation

[dgarske]

You'll need to move this lower down... otherwise mixed declarations.. Not C89 compliant.