Add msvcrt to list of libraries to ignore in Debug mode.
diff --git a/PCbuild/zlib.dsp b/PCbuild/zlib.dsp
index b3dd71a..cfb1cf0 100644
--- a/PCbuild/zlib.dsp
+++ b/PCbuild/zlib.dsp
@@ -82,7 +82,7 @@
 # ADD BSC32 /nologo

 LINK32=link.exe

 # ADD BASE LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:windows /dll /debug /machine:I386 /pdbtype:sept

-# ADD LINK32 user32.lib kernel32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib ..\..\zlib113dll\static32\zlibstat.lib /nologo /subsystem:windows /dll /debug /machine:I386 /nodefaultlib:"libc" /out:"./zlib_d.pyd" /pdbtype:sept /libpath:"Debug" /export:initzlib

+# ADD LINK32 user32.lib kernel32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib ..\..\zlib113dll\static32\zlibstat.lib /nologo /subsystem:windows /dll /debug /machine:I386 /nodefaultlib:"libc msvcrt" /out:"./zlib_d.pyd" /pdbtype:sept /libpath:"Debug" /export:initzlib

 # SUBTRACT LINK32 /pdb:none

 

 !ENDIF