hotfix: fix "use after free" problem (maybe wrong solution)

I'm not sure this is the right thing to do.

Here is the report from Amar Padmanabhan, describing the problem:
-------------------------------------------------------------------------
There is a memcopy in the s1ap_decoder after the call to aper_decode

READ of size 8 at 0x60200001ea70 thread T6
    #0 0x6694c4 in s1ap_decode_s1ap_s1setuprequesties ../buildDebug/s1ap/R10.5/s1ap_decoder.c:6673
    #1 0x552505 in s1ap_mme_decode_initiating /home/vagrant/magma/c/oai/s1ap/s1ap_mme_decoder.c:64
    #2 0x553b3c in s1ap_mme_decode_pdu /home/vagrant/magma/c/oai/s1ap/s1ap_mme_decoder.c:217
    #3 0x54b300 in s1ap_mme_thread /home/vagrant/magma/c/oai/s1ap/s1ap_mme.c:116
    #4 0x7f81d46380a3 in start_thread (/lib/x86_64-linux-gnu/libpthread.so.0+0x80a3)
    #5 0x7f81d27dd62c in clone (/lib/x86_64-linux-gnu/libc.so.6+0xe862c)

Here is the trace of the call to aper_decode which actually frees the underlying memory

    #0 0x7f81d48a1527 in __interceptor_free (/usr/lib/x86_64-linux-gnu/libasan.so.1+0x54527)
    #1 0x546e24 in NativeEnumerated_decode_aper ../buildDebug/s1ap/R10.5/NativeEnumerated.c:186
    #2 0x6c7622 in S1ap_PagingDRX_decode_aper ../buildDebug/s1ap/R10.5/S1ap-PagingDRX.c:125
    #3 0x52c93f in aper_decode ../buildDebug/s1ap/R10.5/per_decoder.c:163
    #4 0x4facb4 in ANY_to_type_aper ../buildDebug/s1ap/R10.5/ANY.c:216
    #5 0x6692f8 in s1ap_decode_s1ap_s1setuprequesties ../buildDebug/s1ap/R10.5/s1ap_decoder.c:6663
-------------------------------------------------------------------------

skeletons/NativeEnumerated.c

@@ -137,7 +137,7 @@ NativeEnumerated_decode_aper(asn_codec_ctx_t *opt_codec_ctx,
 	long *native = (long *)*sptr;
 	asn_per_constraint_t *ct;
 	long value;
-	int freeme = 0;
+	//int freeme = 0;
 
 	(void)opt_codec_ctx;
 
@@ -148,7 +148,7 @@ NativeEnumerated_decode_aper(asn_codec_ctx_t *opt_codec_ctx,
 
 	if(!native) {
 		native = (long *)(*sptr = CALLOC(1, sizeof(*native)));
-		freeme = 1;
+		//freeme = 1;
 		if(!native) _ASN_DECODE_FAILED;
 	}
 
@@ -182,8 +182,8 @@ NativeEnumerated_decode_aper(asn_codec_ctx_t *opt_codec_ctx,
 	*native = specs->value2enum[value].nat_value;
 	ASN_DEBUG("Decoded %s = %ld", td->name, *native);
 
-	if (freeme)
-		free(native);
+	//if (freeme)
+	//	free(native);
 
 	return rval;
 }