[PATCH 1 of 5] cext: fix compilation failure in revlog on Windows

[Matt Harbison]

# HG changeset patch
# User Matt Harbison <matt_harbi...@yahoo.com>
# Date 1533872514 14400
#      Thu Aug 09 23:41:54 2018 -0400
# Node ID 36b8875f1f317742e3914b1dacde6af73a15a045
# Parent  751caa6a293664aa0296ab52f634872442f2bb5c
cext: fix compilation failure in revlog on Windows

diff --git a/mercurial/cext/revlog.c b/mercurial/cext/revlog.c
--- a/mercurial/cext/revlog.c
+++ b/mercurial/cext/revlog.c
@@ -1139,6 +1139,8 @@ static int nt_shortest(nodetree *self, c
 static int index_init_nt(indexObject *self)
 {
        if (self->nt == NULL) {
+               unsigned capacity;
+
                if ((size_t)self->raw_length > INT_MAX / sizeof(nodetreenode)) {
                        PyErr_SetString(PyExc_ValueError, "overflow in 
index_init_nt");
                        return -1;
@@ -1148,7 +1150,7 @@ static int index_init_nt(indexObject *se
                        PyErr_NoMemory();
                        return -1;
                }
-               unsigned capacity = (self->raw_length < 4 ? 4 : 
(int)self->raw_length / 2);
+               capacity = (self->raw_length < 4 ? 4 : (int)self->raw_length / 
2);
                if (nt_init(self->nt, self, capacity) == -1) {
                        PyMem_Free(self->nt);
                        self->nt = NULL;
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