tdc: clean up minor memory errors - plan9port - [fork] Plan 9 from user space

git clone git://src.adamsgaard.dk/plan9port

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commit ab937b56dec51e002ef2e248a3bf9b183f848cc2

parent eb1392208cead07e9e413b5ad4dbd82069d87c30

Author: Russ Cox 

Date:   Sat,  6 Dec 2008 15:35:55 -0800

dc: clean up minor memory errors

Diffstat:
  M src/cmd/dc.c                        |      11 +++++------

1 file changed, 5 insertions(+), 6 deletions(-)
---

diff --git a/src/cmd/dc.c b/src/cmd/dc.c

t@@ -2103,14 +2103,13 @@ copy(Blk *hptr, int size)
         if(size > maxsize)
                 maxsize = size;
         sz = length(hptr);
-        ptr = nalloc(hptr->beg, size);
+        ptr = malloc(size);
         if(ptr == 0) {
-                garbage("copy");
-                if((ptr = nalloc(hptr->beg, size)) == 0) {
-                        Bprint(&bout,"copy size %d\n",size);
-                        ospace("copy");
-                }
+                Bprint(&bout,"copy size %d\n",size);
+                ospace("copy");
         }
+        memmove(ptr, hptr->beg, sz);
+        memset(ptr+sz, 0, size-sz);
         if((hdr = hfree) == 0)
                 hdr = morehd();
         hfree = (Blk *)hdr->rd;