[Fontconfig] [PATCH 3/3] Avoid null pointer dereference in FcNameParse if malloc fails

[Alan Coopersmith]

Reported by parfait 1.3:
Error: Null pointer dereference (CWE 476)
   Read from null pointer t
        at line 423 of src/fcname.c in function 'FcNameParse'.
          Function _FcObjectLookupOtherTypeByName may return constant 'NULL'
           at line 63, called at line 122 of src/fcobjs.c in function
           'FcObjectLookupOtherTypeByName'.
          Function FcObjectLookupOtherTypeByName may return constant 'NULL'
           at line 122, called at line 67 of src/fcname.c in function
           'FcNameGetObjectType'.
          Function FcNameGetObjectType may return constant 'NULL' at line 67,
           called at line 422 in function 'FcNameParse'.
          Null pointer introduced at line 63 of src/fcobjs.c in function
           '_FcObjectLookupOtherTypeByName'.

Signed-off-by: Alan Coopersmith <alan.coopersmith at oracle.com>
---
 src/fcname.c |    2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/fcname.c b/src/fcname.c
index 712b2fa..f302948 100644
--- a/src/fcname.c
+++ b/src/fcname.c
@@ -420,6 +420,8 @@ FcNameParse (const FcChar8 *name)
 		if ((c = FcNameGetConstant (save)))
 		{
 		    t = FcNameGetObjectType ((char *) c->object);
+		    if (t == NULL)
+			goto bail2;
 		    switch ((int) t->type) {
 		    case FcTypeInteger:
 		    case FcTypeDouble:
-- 
1.7.9.2