Do not memcpy to self in ptarray_reverse (see #1302)

git-svn-id: http://svn.osgeo.org/postgis/trunk@8193 b70326c6-7e19-0410-871a-916f4a2858ee

diff --git a/liblwgeom/ptarray.c b/liblwgeom/ptarray.c
index e58b9fe98ada758cc713692f17c38c868743328f..059d95092208bdc541f20800fd797421c3071e7d 100644 (file)
--- a/liblwgeom/ptarray.c
+++ b/liblwgeom/ptarray.c
@@ -281,14 +281,14 @@ void ptarray_free(POINTARRAY *pa)
 void
 ptarray_reverse(POINTARRAY *pa)
 {
-       /* TODO change this to double array operations once point array is double alligned */
+       /* TODO change this to double array operations once point array is double aligned */
        POINT4D pbuf;
        uint32_t i;
        int ptsize = ptarray_point_size(pa);
        int last = pa->npoints-1;
-       int mid = last/2;
+       int mid = pa->npoints/2;
 
-       for (i=0; i<=mid; i++)
+       for (i=0; i<mid; i++)
        {
                uint8_t *from, *to;
                from = getPoint_internal(pa, i);