Add an explicit cast to prevent a compiler warning.

[originally from svn r4399]

1 files changed, 1 insertions, 1 deletions

diff --git a/winhelp.c b/winhelp.c
index ec36031..9bf1bd0 100644
--- a/winhelp.c
+++ b/winhelp.c
@@ -418,7 +418,7 @@ static unsigned long context_hash(char *context)
 
             if (val > 0 && hash > (0xFFFFFFFFUL - val)) {
                 hash -= (0xFFFFFFFFUL - val) + 1;
-            } else if (val < 0 && hash < -val) {
+            } else if (val < 0 && hash < (unsigned long)-val) {
                 hash += (0xFFFFFFFFUL + val) + 1;
             } else
                 hash += val;