Missing @since tags, and adapt to semantics of posix_memalign

Change-Id: I677d973fbcf118111b5fc93b09143c66b0afb0d9

1 files changed, 10 insertions, 3 deletions

diff --git a/sal/osl/unx/memory.c b/sal/osl/unx/memory.c
index 2b6c20f47d1c..ca241b10d103 100644
--- a/sal/osl/unx/memory.c
+++ b/sal/osl/unx/memory.c
@@ -19,9 +19,16 @@ void* osl_aligned_alloc( sal_Size align, sal_Size size )
 #ifdef __ANDROID__
     return memalign(align, size);
 #else
-    void* ptr;
-    int err = posix_memalign(&ptr, align, size);
-    return err ? NULL : ptr;
+    if (size == 0)
+    {
+        return NULL;
+    }
+    else
+    {
+        void* ptr;
+        int err = posix_memalign(&ptr, align, size);
+        return err ? NULL : ptr;
+    }
 #endif
 }