Turn Wunterminated-string-initialization back into an error

Signed-off-by: Felix Conway <felix.conway@arm.com>
diff --git a/tests/scripts/components-compiler.sh b/tests/scripts/components-compiler.sh
index 2864087..1eac64f 100644
--- a/tests/scripts/components-compiler.sh
+++ b/tests/scripts/components-compiler.sh
@@ -94,9 +94,6 @@
     loc_cflags="$ASAN_CFLAGS -DPSA_CRYPTO_DRIVER_TEST_ALL"
     loc_cflags="${loc_cflags} '-DMBEDTLS_USER_CONFIG_FILE=\"../tests/configs/user-config-for-test.h\"'"
     loc_cflags="${loc_cflags} -I../framework/tests/include -O2"
-    # Allow a warning that we don't yet comply to.
-    # https://github.com/Mbed-TLS/mbedtls/issues/9944
-    loc_cflags="${loc_cflags} -Wno-error=unterminated-string-initialization"
 
     make CC=$GCC_15 CFLAGS="${loc_cflags}" LDFLAGS="$ASAN_CFLAGS"