Fixed code which incorrectly assumed that an iterator returned by begin() is

always a modifiable lvalue.


[SVN r40403]

libs/interprocess

@@ -1 +1 @@
-Subproject commit e883dda35021a1dc056cd66595b9f14c6b46593b
+Subproject commit 006586af2d3bbf3ac4f5ce36273a885b499af474