XXX disable JIT for testing

Author: kulp

.github/workflows/c.yml

@@ -8,7 +8,7 @@ on:
 
 env:
   SDL: 1
-  JIT: 1
+  JIT: 0 # XXX debugging only
   ICARUS: 1
   CTEST_OUTPUT_ON_FAILURE: 1
   LIGHTNING_VERSION: 2.2.3