Tidy up some convert_string_internal error cases, found by Andrew Bartlett.
tree3640994ca27422e455c12b4b93e9d27f384c8c64
-rw-r--r-- 1763 .gitignore
-rw-r--r-- 35147 COPYING
-rw-r--r-- 1126 MAINTAINERS
-rw-r--r-- 2558 Manifest
-rw-r--r-- 188 PFIF.txt
-rw-r--r-- 8600 README
-rw-r--r-- 6448 README.Coding
-rw-r--r-- 0 Read-Manifest-Now
-rw-r--r-- 1087 Roadmap
-rw-r--r-- 6702 WHATSNEW.txt
drwxr-xr-x - docs-xml
drwxr-xr-x - examples
drwxr-xr-x - packaging
drwxr-xr-x - pcp
drwxr-xr-x - release-scripts
drwxr-xr-x - source
drwxr-xr-x - swat
drwxr-xr-x - testsuite