[Patch 1/4] MdeModulePkg/RegularExpressionDxe: Miss null pointer check

[Liming Gao <liming.gao@intel.com>]

From: Dongao Guo <dongao.guo@intel.com>

Oniguruma https://github.com/kkos/oniguruma
this change is merged from oniguruma develop branch.
from commit 396a757dffafc0c7eb269433c29a0ba961d73ad6.

Cc: Liming Gao <liming.gao@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Dongao Guo <dongao.guo@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>
---
 MdeModulePkg/Universal/RegularExpressionDxe/Oniguruma/regparse.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/MdeModulePkg/Universal/RegularExpressionDxe/Oniguruma/regparse.c b/MdeModulePkg/Universal/RegularExpressionDxe/Oniguruma/regparse.c
index d274873..6033d21 100644
--- a/MdeModulePkg/Universal/RegularExpressionDxe/Oniguruma/regparse.c
+++ b/MdeModulePkg/Universal/RegularExpressionDxe/Oniguruma/regparse.c
@@ -7725,8 +7725,9 @@ parse_exp(Node** np, OnigToken* tok, int term, UChar** src, UChar* end,
   case TK_ALT:
   case TK_EOT:
   end_of_token:
-  *np = node_new_empty();
-  return tok->type;
+    *np = node_new_empty();
+    CHECK_NULL_RETURN_MEMERR(*np);
+    return tok->type;
   break;
 
   case TK_SUBEXP_OPEN:
@@ -7977,8 +7978,10 @@ parse_exp(Node** np, OnigToken* tok, int term, UChar** src, UChar* end,
     if (IS_SYNTAX_BV(env->syntax, ONIG_SYN_CONTEXT_INDEP_REPEAT_OPS)) {
       if (IS_SYNTAX_BV(env->syntax, ONIG_SYN_CONTEXT_INVALID_REPEAT_OPS))
         return ONIGERR_TARGET_OF_REPEAT_OPERATOR_NOT_SPECIFIED;
-      else
+      else {
         *np = node_new_empty();
+        CHECK_NULL_RETURN_MEMERR(*np);
+      }
     }
     else {
       goto tk_byte;
-- 
2.10.0.windows.1