[syslinux:elflink] module: Check return value of malloc()

[syslinux-bot for Matt Fleming]

Commit-ID:  8deea7fccbf76bca2ec62057afc774540da1603e
Gitweb:     http://www.syslinux.org/commit/8deea7fccbf76bca2ec62057afc774540da1603e
Author:     Matt Fleming <matt.fleming at intel.com>
AuthorDate: Tue, 15 Jan 2013 14:57:45 +0000
Committer:  Matt Fleming <matt.fleming at intel.com>
CommitDate: Wed, 16 Jan 2013 12:22:42 +0000

module: Check return value of malloc()

And return NULL after printing an appropriate error message if the
call failed.

Signed-off-by: Matt Fleming <matt.fleming at intel.com>

---
 com32/lib/sys/module/common.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/com32/lib/sys/module/common.c b/com32/lib/sys/module/common.c
index d72dd70..deb2bcc 100644
--- a/com32/lib/sys/module/common.c
+++ b/com32/lib/sys/module/common.c
@@ -185,6 +185,11 @@ void modules_term(void) {
 struct elf_module *module_alloc(const char *name) {
 	struct elf_module *result = malloc(sizeof(struct elf_module));
 
+	if (!result) {
+	    dprintf("module: Failed to alloc elf_module\n");
+	    return NULL;
+	}
+
 	memset(result, 0, sizeof(struct elf_module));
 
 	INIT_LIST_HEAD(&result->list);