Convert libasn1c to use talloc from libosmocore
diff --git a/asn1c-talloc.patch b/asn1c-talloc.patch
new file mode 100644
index 0000000..f0a32b0
--- /dev/null
+++ b/asn1c-talloc.patch
@@ -0,0 +1,30 @@
+diff --git a/include/asn1c/asn_internal.h b/include/asn1c/asn_internal.h
+index 67f055a..45b1adb 100644
+--- a/include/asn1c/asn_internal.h
++++ b/include/asn1c/asn_internal.h
+@@ -15,6 +15,8 @@
+ #include <assert.h> /* for assert() macro */
+ #endif
+
++#include <osmocore/talloc.h>
++
+ #ifdef __cplusplus
+ extern "C" {
+ #endif
+@@ -23,10 +25,12 @@ extern "C" {
+ #define ASN1C_ENVIRONMENT_VERSION 920 /* Compile-time version */
+ int get_asn1c_environment_version(void); /* Run-time version */
+
+-#define CALLOC(nmemb, size) calloc(nmemb, size)
+-#define MALLOC(size) malloc(size)
+-#define REALLOC(oldptr, size) realloc(oldptr, size)
+-#define FREEMEM(ptr) free(ptr)
++extern void *talloc_asn1_ctx;
++
++#define CALLOC(nmemb, size) talloc_size(talloc_asn1_ctx, (nmemb) * (size))
++#define MALLOC(size) talloc_size(talloc_asn1_ctx, size)
++#define REALLOC(oldptr, size) talloc_realloc_size(talloc_asn1_ctx, oldptr, size)
++#define FREEMEM(ptr) talloc_free(ptr)
+
+ /*
+ * A macro for debugging the ASN.1 internals.