Fixed wrong casting in `OP_LOADI32`.

Negative integer `>-65535` had wrong value, e,g, `p(-40550)` printed
`4294926746` since Nov. 2020, sigh.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/vm.c b/src/vm.c
index 76bd541c3..7a93eeac3 100644
--- a/src/vm.c
+++ b/src/vm.c
@@ -1134,7 +1134,7 @@ RETRY_TRY_BLOCK:
     }
 
     CASE(OP_LOADI32, BSS) {
-      SET_INT_VALUE(mrb, regs[a], (mrb_int)(((uint32_t)b<<16)+c));
+      SET_INT_VALUE(mrb, regs[a], (int32_t)(((uint32_t)b<<16)+c));
       NEXT;
     }