Minor fix to `lb_big_int_to_llvm`

src/llvm_backend_const.cpp

@@ -352,7 +352,7 @@ LLVMValueRef lb_big_int_to_llvm(lbModule *m, Type *original_type, BigInt const *
 		}
 	}
 
-	LLVMValueRef value = LLVMConstIntOfArbitraryPrecision(lb_type(m, original_type), cast(unsigned)(sz+7/8), cast(u64 *)rop);
+	LLVMValueRef value = LLVMConstIntOfArbitraryPrecision(lb_type(m, original_type), cast(unsigned)((sz+7)/8), cast(u64 *)rop);
 	if (big_int_is_neg(a)) {
 		value = LLVMConstNeg(value);
 	}