font: logf: fix pointer in buflibmove_callback

commit 3da69af83cc73098ff7bab5e09cdbbf747f0f69a
Author: Christian Soffke <[email protected]>
Date:   Sat Jan 10 07:11:51 2026 +0100

    font: logf: fix pointer in buflibmove_callback
    
    Buffer contents are only moved after the callback
    returns, so we need to log the path before it has
    been updated to prevent reading garbage.
    
    Change-Id: I187fbd56484249c456155ffcbdde9e44e766dde8

diff --git a/firmware/font.c b/firmware/font.c
index 0f11ea5a0a..689445692b 100644
--- a/firmware/font.c
+++ b/firmware/font.c
@@ -121,6 +121,7 @@ static int buflibmove_callback(int handle, void* current, void* new)
     struct buflib_alloc_data *alloc = (struct buflib_alloc_data*)current;
     ptrdiff_t diff = new - current;
 
+    logf("%s %s", __func__, alloc->path);
 #define UPDATE(x) if (x) { x = PTR_ADD(x, diff); }
 
     UPDATE(alloc->font.bits);
@@ -134,7 +135,6 @@ static int buflibmove_callback(int handle, void* current, void* new)
 
     UPDATE(alloc->font.cache._index);
     UPDATE(alloc->font.cache._lru._base);
-    logf("%s %s", __func__, alloc->path);
     return BUFLIB_CB_OK;
 }
 static void lock_font_handle(int handle, bool lock)
-- 
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