[6.0] 5fdbd0957 polish blob.same and blob.equal

[Dridi Boukelmoune]

commit 5fdbd0957eae0accf1dc10657db30e3766260654
Author: Nils Goroll <nils.goroll at uplex.de>
Date:   Mon Nov 12 17:37:24 2018 +0100

    polish blob.same and blob.equal
    
    If two blob pointers compare equal, the blobs are both the same and
    equal - both being NULL is implied.

diff --git a/lib/libvmod_blob/vmod_blob.c b/lib/libvmod_blob/vmod_blob.c
index 632580e91..08fd2ddf8 100644
--- a/lib/libvmod_blob/vmod_blob.c
+++ b/lib/libvmod_blob/vmod_blob.c
@@ -527,7 +527,7 @@ vmod_same(VRT_CTX, VCL_BLOB b1, VCL_BLOB b2)
 {
 	(void) ctx;
 
-	if (b1 == NULL && b2 == NULL)
+	if (b1 == b2)
 		return 1;
 	if (b1 == NULL || b2 == NULL)
 		return 0;
@@ -539,7 +539,7 @@ vmod_equal(VRT_CTX, VCL_BLOB b1, VCL_BLOB b2)
 {
 	(void) ctx;
 
-	if (b1 == NULL && b2 == NULL)
+	if (b1 == b2)
 		return 1;
 	if (b1 == NULL || b2 == NULL)
 		return 0;