Bug 307309 - IOConsoleInputStream.available() should return -1 if size
is zero

This avioids endless while loop in
ProcessConsole.InputReadJob.run(IProgressMonitor)

Change-Id: Ied3dc78a2f1b9671e64193a18ead17c9f9f57f08
Signed-off-by: Andrey Loskutov <loskutov@gmx.de>
diff --git a/org.eclipse.ui.console/src/org/eclipse/ui/console/IOConsoleInputStream.java b/org.eclipse.ui.console/src/org/eclipse/ui/console/IOConsoleInputStream.java
index 0791aa5..08aca97 100644
--- a/org.eclipse.ui.console/src/org/eclipse/ui/console/IOConsoleInputStream.java
+++ b/org.eclipse.ui.console/src/org/eclipse/ui/console/IOConsoleInputStream.java
@@ -269,6 +269,11 @@
 	public int available() throws IOException {
 		if (closed && eofSent) {
 			throw new IOException("Input Stream Closed"); //$NON-NLS-1$
+		} else if (size == 0) {
+			if (!eofSent) {
+				eofSent = true;
+				return -1;
+			}
 		}
 		return size;
 	}