Revert "updated unicorn version"

This reverts commit 4515e06c.

unicorn_mode/UNICORNAFL_VERSION

-c6d66471
+0ca7a8f2

unicorn_mode/samples/persistent/harness.c

@@ -204,7 +204,7 @@ int main(int argc, char **argv, char **envp) {
 
     // Map memory.
     mem_map_checked(uc, BASE_ADDRESS, len, UC_PROT_ALL);
-    /* printf("Len: %lx\n", len); */
+    printf("Len: %lx\n", len);
     fflush(stdout);
 
     // write machine code to be emulated to memory

unicornafl @ 0ca7a8f2

-Subproject commit c6d6647161a32bae88785a618fcd828d1711d9e6
+Subproject commit 0ca7a8f22b8bb028eb9fe053c0974a60ee640f18

unicorn_mode/update_uc_ref.sh

@@ -21,10 +21,10 @@ fi
 
 git submodule init && git submodule update || exit 1
 cd ./unicornafl || exit 1
-git fetch origin dev 1>/dev/null || exit 1
+git fetch origin master 1>/dev/null || exit 1
 git stash 1>/dev/null 2>/dev/null
 git stash drop 1>/dev/null 2>/dev/null
-git checkout dev
+git checkout master
 
 if [ -z "$NEW_VERSION" ]; then
   # No version provided, take HEAD.