Log errno when dup fd cannot be allocated

BUG: 25165471

Change-Id: I7342e2b4c566325fc2e15643a7c7b6ba989ee8c7

core/jni/android/graphics/Bitmap.cpp

@@ -1006,6 +1006,7 @@ static jobject Bitmap_createFromParcel(JNIEnv* env, jobject, jobject parcel) {
         // is disposed.
         int dupFd = dup(blob.fd());
         if (dupFd < 0) {
+            ALOGE("Error allocating dup fd. Error:%d", errno);
             blob.release();
             SkSafeUnref(ctable);
             doThrowRE(env, "Could not allocate dup blob fd.");