tools: Fix for $LOGNAME missing in Ubuntu 11.10, using $USER instead

Change-Id: I824fc6ca27c2a2308e977a14585afc6dd4996f56
diff --git a/tools/squisher b/tools/squisher
index 61a3663..c82443f 100755
--- a/tools/squisher
+++ b/tools/squisher
@@ -24,9 +24,9 @@
 fi
 
 if [ "$TARGET_BUILD_TYPE" = "debug" ]; then
-    OTAPACKAGE=$OUT/${TARGET_PRODUCT}_debug-ota-$TARGET_BUILD_VARIANT.$LOGNAME.zip
+    OTAPACKAGE=$OUT/${TARGET_PRODUCT}_debug-ota-$TARGET_BUILD_VARIANT.$USER.zip
 else
-    OTAPACKAGE=$OUT/$TARGET_PRODUCT-ota-$TARGET_BUILD_VARIANT.$LOGNAME.zip
+    OTAPACKAGE=$OUT/$TARGET_PRODUCT-ota-$TARGET_BUILD_VARIANT.$USER.zip
 fi
 if [ ! -f "$OTAPACKAGE" ]; then
 	echo "$OTAPACKAGE doesn't exist!";