Do not try to parse current pointer when the line is invalid or empty.

This fixes a "Conditional jump or move depends on uninitialised value" during empty synthesis parsing

(backported from trunk)

2 files changed, 5 insertions, 1 deletions

diff --git a/NEWS b/NEWS
index 10227f9..66a7c73 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,6 @@
+- do not try to parse current pointer when the line is invalid or
+  empty (detected by valgrind)
+
 Version 3.40.1 - 28 June 2012
 
 - enable to read xz & bzip2 compressed synthesis
diff --git a/URPM.xs b/URPM.xs
index 9fa8621..c3e95ff 100644
--- a/URPM.xs
+++ b/URPM.xs
@@ -3353,7 +3353,8 @@ Urpm_parse_synthesis__XS(urpm, filename, ...)
 	    p = &buff[buff_len-(p-buff)];
 	}
         // EOF:
-        if (!parse_line(depslist, provides, obsoletes, &pkg, p, urpm, callback))
+        if (ok && buff_len > 0
+            && !parse_line(depslist, provides, obsoletes, &pkg, p, urpm, callback))
              ok = 0;
 	if (Fclose(f) != 0) ok = 0;
 	SPAGAIN;