Free arguments copied with strdup

Change-Id: I0ad9620145c2a9c4450b9bf20cd1f70c9db6593c
Signed-off-by: Jimmy Brisson <jimmy.brisson@arm.com>

tools/cert_create/src/main.c

@@ -593,5 +593,32 @@ int main(int argc, char *argv[])
 #endif
 	CRYPTO_cleanup_all_ex_data();
 
+
+	/* We allocated strings through strdup, so now we have to free them */
+	for (i = 0; i < num_keys; i++) {
+		if (keys[i].fn != NULL) {
+			void *ptr = keys[i].fn;
+
+			keys[i].fn = NULL;
+			free(ptr);
+		}
+	}
+	for (i = 0; i < num_extensions; i++) {
+		if (extensions[i].arg != NULL) {
+			void *ptr = (void *)extensions[i].arg;
+
+			extensions[i].arg = NULL;
+			free(ptr);
+		}
+	}
+	for (i = 0; i < num_certs; i++) {
+		if (certs[i].fn != NULL) {
+			void *ptr = (void *)certs[i].fn;
+
+			certs[i].fn = NULL;
+			free(ptr);
+		}
+	}
+
 	return 0;
 }