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-rw-r--r--win/tclWinSerial.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/win/tclWinSerial.c b/win/tclWinSerial.c
index 220b47b..8384a43 100644
--- a/win/tclWinSerial.c
+++ b/win/tclWinSerial.c
@@ -1630,7 +1630,7 @@ SerialSetOptionProc(
size_t len, vlen;
Tcl_DString ds;
const WCHAR *native;
- int argc;
+ size_t argc;
const char **argv;
infoPtr = (SerialInfo *) instanceData;