Fix clusterLoadConfig aux_argv minor memory leak

We forgot to call sdsfreesplitres. This is just a cleanup since it will
only be leaked in the error paths, and we will exit on the error paths.

src/cluster.c

@@ -470,6 +470,7 @@ int clusterLoadConfig(char *filename) {
             if (field_argv == NULL || field_argc != 2) {
                 /* Invalid aux field format */
                 if (field_argv != NULL) sdsfreesplitres(field_argv, field_argc);
+                sdsfreesplitres(aux_argv, aux_argc);
                 sdsfreesplitres(argv,argc);
                 goto fmterr;
             }
@@ -479,6 +480,7 @@ int clusterLoadConfig(char *filename) {
                 if (!isValidAuxString(field_argv[j],sdslen(field_argv[j]))){
                     /* Invalid aux field format */
                     sdsfreesplitres(field_argv, field_argc);
+                    sdsfreesplitres(aux_argv, aux_argc);
                     sdsfreesplitres(argv,argc);
                     goto fmterr;
                 }
@@ -498,6 +500,7 @@ int clusterLoadConfig(char *filename) {
                 if (auxFieldHandlers[j].setter(n, field_argv[1], sdslen(field_argv[1])) != C_OK) {
                     /* Invalid aux field format */
                     sdsfreesplitres(field_argv, field_argc);
+                    sdsfreesplitres(aux_argv, aux_argc);
                     sdsfreesplitres(argv,argc);
                     goto fmterr;
                 }
@@ -506,6 +509,7 @@ int clusterLoadConfig(char *filename) {
             if (field_found == 0) {
                 /* Invalid aux field format */
                 sdsfreesplitres(field_argv, field_argc);
+                sdsfreesplitres(aux_argv, aux_argc);
                 sdsfreesplitres(argv,argc);
                 goto fmterr;
             }