Merge pull request #96 from andypost/master

Fix segfault in do_operation handler (ext-decimal 2.0.x)

Author: rtheunissen

src/decimal.c

@@ -344,6 +344,7 @@ static php_decimal_success_t php_decimal_do_operation_handler(zend_uchar opcode,
     /* Unsupported op type - return success to avoid casting. */
     if (UNEXPECTED(op == NULL)) {
         php_decimal_operator_not_supported();
+        ZVAL_UNDEF(result);
         return SUCCESS;
     }
 

src/number.c

@@ -108,6 +108,7 @@ static php_decimal_success_t php_decimal_number_do_operation(zend_uchar opcode,
     /* Unsupported operator - return success to avoid casting. */
     if (UNEXPECTED(func == NULL)) {
         php_decimal_operator_not_supported();
+        ZVAL_UNDEF(result);
         return SUCCESS;
     }
 

src/rational.c

@@ -354,6 +354,7 @@ static php_decimal_success_t php_decimal_rational_do_operation(zend_uchar opcode
     /* Unsupported operator - return success to avoid casting. */
     if (UNEXPECTED(op == NULL)) {
         php_decimal_operator_not_supported();
+        ZVAL_UNDEF(result);
         return SUCCESS;
     }