patch 7.4.887

Problem:    Using uninitialized memory for regexp with back reference.
            (Dominique Pelle)
Solution:   Initialize end_lnum.

Author: brammool

src/regexp_nfa.c

@@ -4523,6 +4523,7 @@ addstate(l, state, subs_arg, pim, off)
 		    sub->list.multi[subidx].start_col =
 					  (colnr_T)(reginput - regline + off);
 		}
+		sub->list.multi[subidx].end_lnum = -1;
 	    }
 	    else
 	    {

src/version.c

@@ -741,6 +741,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    887,
 /**/
     886,
 /**/