Parse negate properly in dc
diff --git a/src/data.c b/src/data.c
index 52cb859..dcb078f 100644
--- a/src/data.c
+++ b/src/data.c
@@ -265,7 +265,7 @@
 
 const BcInst dc_parse_insts[] = {
 	BC_INST_INVALID, BC_INST_INVALID, BC_INST_INVALID, BC_INST_INVALID,
-	BC_INST_NEG, BC_INST_POWER, BC_INST_MULTIPLY, BC_INST_DIVIDE,
+	BC_INST_INVALID, BC_INST_POWER, BC_INST_MULTIPLY, BC_INST_DIVIDE,
 	BC_INST_MODULUS, BC_INST_PLUS, BC_INST_MINUS,
 	BC_INST_REL_EQ, BC_INST_REL_LE, BC_INST_REL_GE, BC_INST_REL_NE,
 	BC_INST_REL_LT, BC_INST_REL_GT,