From 6f312023329865ff8a312355a50075f7fc6089f1 Mon Sep 17 00:00:00 2001
From: jpirnay <jens@pirnay.com>
Date: Fri, 24 Apr 2026 16:37:39 +0200
Subject: [PATCH] Minor adjustment

---
 lib/EpdFont/FontDecompressor.cpp | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/lib/EpdFont/FontDecompressor.cpp b/lib/EpdFont/FontDecompressor.cpp
index 8cdc1d12..1f34186b 100644
--- a/lib/EpdFont/FontDecompressor.cpp
+++ b/lib/EpdFont/FontDecompressor.cpp
@@ -347,7 +347,11 @@ int FontDecompressor::prewarmCache(const EpdFontData* fontData, const char* utf8
     uint8_t* groupIdToPos = static_cast<uint8_t*>(malloc(fontData->groupCount));
     if (!groupIdToPos) {
       LOG_ERR("FDC", "OOM: cannot allocate %u bytes for groupIdToPos map", fontData->groupCount);
-      freePageBuffer();
+      // Roll back this slot only (other slots from prior prewarmCache calls stay valid)
+      free(slot.buffer);
+      free(slot.glyphs);
+      slot = {};
+      pageSlotCount--;
       return glyphCount;
     }
     memset(groupIdToPos, 0xFF, fontData->groupCount);