Add unreachable() after calls to eh_unwind_resume.

Author: Mark-Simulacrum

src/librustc_trans/cleanup.rs

@@ -93,6 +93,7 @@ impl<'tcx> DropValue<'tcx> {
             } else {
                 let exc_ptr = resume_bcx.extract_value(lp, 0);
                 resume_bcx.call(fcx.eh_unwind_resume().reify(fcx.ccx), &[exc_ptr], None);
+                resume_bcx.unreachable();
             }
             UnwindKind::LandingPad
         };

src/librustc_trans/mir/block.rs

@@ -130,6 +130,7 @@ impl<'a, 'tcx> MirContext<'a, 'tcx> {
                             &[exc_ptr],
                             cleanup_bundle,
                         );
+                        bcx.unreachable();
                     }
                 }
             }