11972 resync smatch

*** 45,57 ****
                  return strip_condition(expr->unop);
  
          if (expr->type == EXPR_COMPARE &&
              (expr->op == SPECIAL_EQUAL ||
               expr->op == SPECIAL_NOTEQUAL)) {
!                 if (is_zero(expr->left))
                          return strip_condition(expr->right);
!                 if (is_zero(expr->right))
                          return strip_condition(expr->left);
          }
  
          return expr;
  }
--- 45,57 ----
                  return strip_condition(expr->unop);
  
          if (expr->type == EXPR_COMPARE &&
              (expr->op == SPECIAL_EQUAL ||
               expr->op == SPECIAL_NOTEQUAL)) {
!                 if (expr_is_zero(expr->left))
                          return strip_condition(expr->right);
!                 if (expr_is_zero(expr->right))
                          return strip_condition(expr->left);
          }
  
          return expr;
  }
*** 129,138 ****
--- 129,141 ----
          struct statement *stmt;
          struct position pos;
          struct position prev_pos;
          char *ident;
  
+         if (!__cur_stmt)
+                 return 0;
+ 
          if (__prev_stmt) {
                  prev_pos = __prev_stmt->pos;
                  prev_pos.line -= 3;
          } else {
                  prev_pos = __cur_stmt->pos;