emulator: opengl: minor fix and reformatting

This patches fixes a minor invalid usage of delete (instead of delete[])
and reformats the source code a little to make it more obvious.

Change-Id: If853d12e74549abcc6682430c837b0f14da81fdc

tools/emulator/opengl/system/OpenglSystemCommon/HostConnection.cpp

@@ -69,6 +69,7 @@ HostConnection *HostConnection::get()
             }
             if (stream->connect() < 0) {
                 LOGE("Failed to connect to host (QemuPipeStream)!!!\n");
+                delete stream;
                 delete con;
                 return NULL;
             }
@@ -85,6 +86,7 @@ HostConnection *HostConnection::get()
 
             if (stream->connect("10.0.2.2", STREAM_PORT_NUM) < 0) {
                 LOGE("Failed to connect to host (TcpStream)!!!\n");
+                delete stream;
                 delete con;
                 return NULL;
             }