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1 files changed, 1 insertions, 1 deletions

diff --git a/c/common.c b/c/common.c
index c1f9614..c672a4d 100644
--- a/c/common.c
+++ b/c/common.c
@@ -6,7 +6,7 @@
 /* Convert zero-terminated non-wide (multi-byte) string to
  * zero-terminated wide/non-wide string depending on UNICODE. */
 TCHAR *
-TSZFromSZ(char *sz, int iCp)
+TSZFromSZ(const char *sz, int iCp)
 {
 	TCHAR *tsz;