Fix descriptor leak after accepting connections

After accepting a connection on a listening socket and
storing the resulting FileDescriptor into a newly created
LocalSocketImpl, the new impl's "descriptor was created
locally and should be closed normally" flag should be set.

(cherrypicked from 3e7305c6bf)

Bug: 11805817
Change-Id: I0a1a7c62ec3fbcf647a44a22110ddc778d14e5f4

core/java/android/net/LocalSocketImpl.java

@@ -326,6 +326,7 @@ class LocalSocketImpl
         }
 
         s.fd = accept(fd, s);
+        s.mFdCreatedInternally = true;
     }
 
     /**
@@ -536,4 +537,3 @@ class LocalSocketImpl
         close();
     }
 }
-