[ignition, debugger] correctly set position for return with elided bytecode.

test/mjsunit/mjsunit.status

Index: test/mjsunit/mjsunit.status
diff --git a/test/mjsunit/mjsunit.status b/test/mjsunit/mjsunit.status
index 5cb5666e1ee5aaff9c47d957a2921eaf55bef8fc..b26a95aa02d1484ceae7c6bce570cc0f43e4ea67 100644
--- a/test/mjsunit/mjsunit.status
+++ b/test/mjsunit/mjsunit.status
@@ -807,6 +807,9 @@
   # TODO(mythria, 4680): possibly problem with line numbers.
   'es6/regress/regress-468661': [FAIL],
 
+  # Debugger test cases that pass with ignition, but not full-codegen.
+  # These differences between full-codegen and ignition are deliberate.
+  'ignition/elided-instruction-no-ignition': [FAIL],
 }],  # ignition == True
 
 ['ignition == True and arch == arm64', {
@@ -823,6 +826,12 @@
   'regress/regress-1257': [SKIP],
 }],  # ignition == True and arch == arm
 
+['ignition == False', {
+  # Debugger test cases that pass with full-codegen, but not ignition.
+  # These differences between full-codegen and ignition are deliberate.
+  'ignition/elided-instruction': [FAIL],
+}],  # ignition == False
+
 ##############################################################################
 ['gcov_coverage', {
   # Tests taking too long.