diff options
Diffstat (limited to 'src/newgrf_config.cpp')
| -rw-r--r-- | src/newgrf_config.cpp | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/src/newgrf_config.cpp b/src/newgrf_config.cpp index bbd670a71..df8685030 100644 --- a/src/newgrf_config.cpp +++ b/src/newgrf_config.cpp @@ -360,10 +360,10 @@ static bool CalcGRFMD5Sum(GRFConfig *config, Subdirectory subdir) f = FioFOpenFile(config->filename, "rb", subdir, &size); if (f == NULL) return false; - size_t start = ftell(f); + long start = ftell(f); size = min(size, GRFGetSizeOfDataSection(f)); - if (fseek(f, start, SEEK_SET) < 0) { + if (start < 0 || fseek(f, start, SEEK_SET) < 0) { FioFCloseFile(f); return false; } |