bpo-36245: Fix more empty environment variable checks (GH-12592)

b95a79c9 · Steve Dower · GitHub · d5a5a33f · b95a79c9
Commit b95a79c9 authored Mar 27, 2019 by Steve Dower Committed by GitHub Mar 27, 2019
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PCbuild/get_externals.bat PCbuild/get_externals.bat +2 -2

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--- a/PCbuild/get_externals.bat
+++ b/PCbuild/get_externals.bat
@@ -2,8 +2,8 @@
 setlocal
 rem Simple script to fetch source for external libraries

-if "%PCBUILD%"=="" (set PCBUILD=%~dp0)
-if "%EXTERNALS_DIR%"=="" (set EXTERNALS_DIR=%PCBUILD%\..\externals)
+if NOT DEFINED PCBUILD (set PCBUILD=%~dp0)
+if NOT DEFINED EXTERNALS_DIR (set EXTERNALS_DIR=%PCBUILD%\..\externals)

 set DO_FETCH=true
 set DO_CLEAN=false