RFR: 8169713: jimage fails with StringIndexOutOfBoundsException when path to the inspected image is an empty string

[Claes Redestad]

Hi,

please review this fix to make the jimage tool work correctly
for empty string:
diff -r b2661d26e556 
src/jdk.jlink/share/classes/jdk/tools/jlink/internal/TaskHelper.java
--- 
a/src/jdk.jlink/share/classes/jdk/tools/jlink/internal/TaskHelper.java 
Wed Feb 22 14:12:01 2017 -0800
+++ 
b/src/jdk.jlink/share/classes/jdk/tools/jlink/internal/TaskHelper.java 
Thu Feb 23 18:27:48 2017 +0100
@@ -524,7 +524,7 @@
             List<String> rest = collectUnhandled? new ArrayList<>() : 
null;
             // process options
             for (int i = 0; i < args.length; i++) {
-                if (args[i].charAt(0) == '-') {
+                if (args[i].startsWith("-")) {
                     String name = args[i];
                     PluginOption pluginOption = null;
                     Option<T> option = getOption(name);

/Claes