Fixed out-of-range error.

- Resolves VUFIND-1183.

import/index_scripts/author.bsh

@@ -375,9 +375,9 @@ public String processInitials(String authorName) {
         if (name.length() > 0) {
             String initial = name.substring(0,1);
             // if there is a hyphenated name, use both initials
-            if (name.indexOf('-') > 0) {
-                int pos = name.indexOf('-');
-                String extra = name.substring(pos+1,pos+2);
+            int pos = name.indexOf('-');
+            if (pos > 0 && pos < name.length() - 1) {
+                String extra = name.substring(pos+1, pos+2);
                 initial = initial + " " + extra;
             }
             result += " " + initial;