fix alloc_canary should not be on TLS. thread malloc=a -> thread free(a) results in a wringly detected canary mistmatch
@@ -130,7 +130,7 @@ static u8 alloc_verbose, /* Additional debug messages */
static __thread size_t total_mem; /* Currently allocated mem */
static __thread u32 call_depth; /* To avoid recursion via fprintf() */
-static __thread u32 alloc_canary;
+static u32 alloc_canary;
/* This is the main alloc function. It allocates one page more than necessary,
sets that tailing page to PROT_NONE, and then increments the return address
