From: Pranav Batra <batrapranav@chromium.org>

The hpcups ljcolor filter periodically restarts the compression algorithm
to prevent printers from running out of memory during decompression.
m_iYPos is used to restart said algorithm every 1200 encapsulate calls.
This variable should be initialized to zero so that the print output is stable.

https://bugs.launchpad.net/hplip/+bug/1926369

Corresponding change in ChromeOS: https://crrev.com/c/2851914

--- a/prnt/hpcups/LJColor.cpp
+++ b/prnt/hpcups/LJColor.cpp
@@ -38,7 +38,7 @@
 #include "ColorMaps.h"
 #include "PrinterCommands.h"
 
-LJColor::LJColor() : Encapsulator()
+LJColor::LJColor() : Encapsulator(), m_iYPos(0)
 {
     memset(&m_PM, 0, sizeof(m_PM));
     strcpy(m_szLanguage, "PCL");