8062606: Fix a typo in java.awt.Robot class

Reviewed-by: yan, serb
diff --git a/jdk/src/java.desktop/share/classes/java/awt/Robot.java b/jdk/src/java.desktop/share/classes/java/awt/Robot.java
index 5c6352d..1442dc8 100644
--- a/jdk/src/java.desktop/share/classes/java/awt/Robot.java
+++ b/jdk/src/java.desktop/share/classes/java/awt/Robot.java
@@ -562,7 +562,7 @@
         try {
             SunToolkit.flushPendingEvents();
             // 7185258: realSync() call blocks all DnD tests on OS X
-            if (AccessController.doPrivileged(OSInfo.getOSTypeAction()) = OSInfo.OSType.MACOSX) {
+            if (AccessController.doPrivileged(OSInfo.getOSTypeAction()) == OSInfo.OSType.MACOSX) {
                 // post a dummy event to the queue so we know when
                 // all the events before it have been processed
                 EventQueue.invokeAndWait( new Runnable() {