texinfo: fix crash when searching for backspace.

srcpkgs/texinfo/patch/svn7907.patch

@@ -0,0 +1,49 @@
+fix crash in incremental search for \
+
+--- info/search.c	2017/07/05 17:56:51	7906
++++ info/search.c	2017/07/05 19:16:44	7907
+@@ -174,8 +174,8 @@
+   state->match_count = match_count;
+ }
+ 
+-/* Search BUFFER for REGEXP.  Pass back the list of matches
+-   in MATCH_STATE. */
++/* Search BUFFER for REGEXP.  If matches are found, pass back the list of 
++   matches in MATCH_STATE. */
+ enum search_result
+ regexp_search (char *regexp, int is_literal, int is_insensitive,
+                char *buffer, size_t buflen,
+@@ -201,6 +201,7 @@
+       char *buf = xmalloc (size);
+       regerror (result, &preg, buf, size);
+       info_error (_("regexp error: %s"), buf);
++      free (buf);
+       return search_invalid;
+     }
+ 
+@@ -215,7 +216,10 @@
+   extend_matches (match_state);
+ 
+   if (match_state->match_count == 0)
+-    return search_not_found;
++    {
++      free_matches (match_state);
++      return search_not_found;
++    }
+   else
+     return search_success;
+ }
+--- info/session.c	2017/07/05 17:56:51	7906
++++ info/session.c	2017/07/05 19:16:44	7907
+@@ -3953,10 +3953,7 @@
+     }
+   
+   if (result != search_success)
+-    {
+-      free_matches (&matches);
+-      return result;
+-    }
++    return result;
+ 
+   if (node->flags & N_Simple)
+     {

srcpkgs/texinfo/template

@@ -1,7 +1,7 @@
 # Template file for 'texinfo'
 pkgname=texinfo
 version=6.4
-revision=1
+revision=2
 build_style=gnu-configure
 configure_args="--disable-static"
 hostmakedepends="perl ncurses-devel"