Fix leak/crash in exit

Bug: 120440607
Test: hwuimacro32 doesn't crash
Change-Id: I35b7a924e338efb314f07b923ba22ffcf98f75ee
diff --git a/libs/hwui/renderthread/EglManager.cpp b/libs/hwui/renderthread/EglManager.cpp
index 56eedff..8cd97ed 100644
--- a/libs/hwui/renderthread/EglManager.cpp
+++ b/libs/hwui/renderthread/EglManager.cpp
@@ -93,7 +93,9 @@
         , mHasWideColorGamutSupport(false) {}
 
 EglManager::~EglManager() {
-    destroy();
+    if (hasEglContext()) {
+        ALOGW("~EglManager() leaked an EGL context");
+    }
 }
 
 void EglManager::initialize() {