fix iMon vbars

ChangeLog

@@ -10,7 +10,7 @@ v.0.5dev (ongoing development)
  * refactor adv_bignum: support height > 4, loadable chars with offset
  * ged rid of global variables buffer & tmp in lcdproc client
  + add init-script templates for LSB 3.x conforming systems
- * fix cellwidth & hbar in iMon driver
+ * fix cellwidth, vbar & hbar in iMon driver
  * try harder to find a shell in lcdexec
 
 v.0.5.1

server/drivers/imon.c

@@ -247,7 +247,7 @@ MODULE_EXPORT void imon_vbar (Driver *drvthis, int x, int y, int len, int promil
 			; // write nothing (not even a space) 
 		}
 
-		pixels -= p->cellheight * pos;
+		pixels -= p->cellheight;
 	}
 }