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-rw-r--r--apt-pkg/contrib/mmap.cc2
1 files changed, 2 insertions, 0 deletions
diff --git a/apt-pkg/contrib/mmap.cc b/apt-pkg/contrib/mmap.cc
index 69fb61fca..4978446d2 100644
--- a/apt-pkg/contrib/mmap.cc
+++ b/apt-pkg/contrib/mmap.cc
@@ -266,6 +266,8 @@ DynamicMMap::~DynamicMMap()
{
if (Fd == 0)
{
+ if (Base == 0)
+ return;
#ifdef _POSIX_MAPPED_FILES
munmap(Base, WorkSpace);
#else