[PATCH libpciaccess 2/2] device-name: handle calloc failure in insert()

[Emil Velikov]

From: arsharma <ankitprasad.r.sharma at intel.com>

Issue was spotted by Klocwork, and fixed by arsharma as part of
Android-ia.

Just bail out if memory allocation fails. All the callers of insert()
already handle the case.

[Emil Velikov: Split from larger patch, write commit message]
Signed-off-by: Emil Velikov <emil.l.velikov at gmail.com>
---
 src/common_device_name.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/common_device_name.c b/src/common_device_name.c
index a990ac8..3dd35d7 100644
--- a/src/common_device_name.c
+++ b/src/common_device_name.c
@@ -154,6 +154,10 @@ insert( uint16_t vendor )
 
     if ( tree == NULL ) {
 	tree = calloc( 1, sizeof( struct pci_id_node ) );
+
+	if ( tree == NULL )
+	    return NULL;
+
 	tree->bits = 4;
     }
 
@@ -175,6 +179,9 @@ insert( uint16_t vendor )
 		struct pci_id_node * child =
 		    calloc( 1, sizeof( struct pci_id_node ) );
 
+		if ( tree == NULL )
+		    return NULL;
+
 		child->bits = 4;
 
 		n->children[ idx ] = child;
@@ -183,6 +190,9 @@ insert( uint16_t vendor )
 		struct pci_id_leaf * leaf =
 		    calloc( 1, sizeof( struct pci_id_leaf ) );
 
+		if ( tree == NULL )
+		    return NULL;
+
 		leaf->vendor = vendor;
 
 		n->children[ idx ] = (struct pci_id_node *) leaf;
-- 
2.3.0