Fix EGL JNI bugs
Bug #3461349

Before this change, eglGetCurrent*() could not be used to compare
contexts, displays and surfaces at the Dalvik level.

Change-Id: I442037dae37bc357b64810ab10c779b5754e9153
diff --git a/core/jni/com_google_android_gles_jni_EGLImpl.cpp b/core/jni/com_google_android_gles_jni_EGLImpl.cpp
index e7ea8c8..3d24bee 100644
--- a/core/jni/com_google_android_gles_jni_EGLImpl.cpp
+++ b/core/jni/com_google_android_gles_jni_EGLImpl.cpp
@@ -400,7 +400,7 @@
 }
 
 static jint jni_eglGetCurrentSurface(JNIEnv *_env, jobject _this, jint readdraw) {
-    if (!(readdraw == EGL_READ) || (readdraw == EGL_DRAW)) {
+    if ((readdraw != EGL_READ) && (readdraw != EGL_DRAW)) {
         doThrow(_env, "java/lang/IllegalArgumentException");
         return 0;
     }