apply fix for XHTML1 formating from Nick Wellnhofer fixes bug #141266

* xmlsave.c: apply fix for XHTML1 formating from Nick Wellnhofer
  fixes bug #141266
* test/xhtmlcomp result//xhtmlcomp*: added the specific regression
  test
Daniel
diff --git a/result/xhtmlcomp.rdr b/result/xhtmlcomp.rdr
new file mode 100644
index 0000000..97517b7
--- /dev/null
+++ b/result/xhtmlcomp.rdr
@@ -0,0 +1,19 @@
+0 10 html 0 0
+0 1 html 0 0
+1 14 #text 0 1 
+  
+1 1 body 0 0
+2 14 #text 0 1 
+    
+2 1 h1 0 0
+3 1 abbr 0 0
+4 3 #text 0 1 a
+3 15 abbr 0 0
+3 3 #text 0 1  b
+2 15 h1 0 0
+2 14 #text 0 1 
+  
+1 15 body 0 0
+1 14 #text 0 1 
+
+0 15 html 0 0