profile.d: Don't return from a sourced script (Debian: #741657)

bash_completion.sh.in

@@ -1,5 +1,5 @@
 # Check for interactive bash and that we haven't already been sourced.
-[ -z "$BASH_VERSION" -o -z "$PS1" -o -n "$BASH_COMPLETION_COMPAT_DIR" ] && return
+if [ -n "$BASH_VERSION" -a -n "$PS1" -a -z "$BASH_COMPLETION_COMPAT_DIR" ]; then
 
     # Check for recent enough version of bash.
     bash=${BASH_VERSION%.*}; bmajor=${bash%.*}; bminor=${bash#*.}
@@ -12,3 +12,5 @@ if [ $bmajor -gt 4 ] || [ $bmajor -eq 4 -a $bminor -ge 1 ]; then
         fi
     fi
     unset bash bmajor bminor
+
+fi