make local var hoisting disabled by default

until we have a complete data and CFG analysis make it safe.

Author: jpbempel

dd-trace-api/src/main/java/datadog/trace/api/ConfigDefaults.java

@@ -181,7 +181,7 @@ public final class ConfigDefaults {
   static final boolean DEFAULT_DEBUGGER_VERIFY_BYTECODE = true;
   static final boolean DEFAULT_DEBUGGER_INSTRUMENT_THE_WORLD = false;
   static final int DEFAULT_DEBUGGER_CAPTURE_TIMEOUT = 100; // milliseconds
-  static final boolean DEFAULT_DEBUGGER_HOIST_LOCALVARS_ENABLED = true;
+  static final boolean DEFAULT_DEBUGGER_HOIST_LOCALVARS_ENABLED = false;
   static final boolean DEFAULT_DEBUGGER_SYMBOL_ENABLED = true;
   static final boolean DEFAULT_DEBUGGER_SYMBOL_FORCE_UPLOAD = false;
   static final int DEFAULT_DEBUGGER_SYMBOL_FLUSH_THRESHOLD = 100; // nb of classes