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-rw-r--r--lib/private/legacy/OC_Image.php2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/private/legacy/OC_Image.php b/lib/private/legacy/OC_Image.php
index 1e2791f62c9..3e9812c99f2 100644
--- a/lib/private/legacy/OC_Image.php
+++ b/lib/private/legacy/OC_Image.php
@@ -1211,7 +1211,7 @@ if (!function_exists('imagebmp')) {
} // RLE8
elseif ($compression == 1 && $bit == 8) {
for ($j = $height - 1; $j >= 0; $j--) {
- $lastIndex = 0;
+ $lastIndex = null;
$sameNum = 0;
for ($i = 0; $i <= $width; $i++) {
$index = imagecolorat($im, $i, $j);