protect against nullptr use (can happen when loading a schematic)

Fixes https://gitlab.com/kicad/code/kicad/-/issues/21767
4 weeks ago · 6acba9d2ba
1 changed files with 2 additions and 1 deletions
--- a/eeschema/sch_label.cpp
+++ b/eeschema/sch_label.cpp
@ -939,7 +939,8 @@ bool SCH_LABEL_BASE::ResolveTextVar( const SCH_SHEET_PATH* aPath, wxString* toke
    }
    else
    {
-        if( aPath->Last()->ResolveTextVar( aPath, token, aDepth + 1 ) )
+        // aPath->Last() can be null when loading schematic, i.e. when all sheets are not yet loaded
+        if( aPath->Last() && aPath->Last()->ResolveTextVar( aPath, token, aDepth + 1 ) )
            return true;
    }