Build fails after putting "" in "enter password" prompt

[SergeyDidenko]

Used "ant", then "ant clean build-all".

Build asks for the password to sign a jar and then fails when I enter the empty string.

The last ant lines:

"
netbeans:
[genlist] Generating information for Auto Update...

-nbm-prompt-for-storepass:
[input] Enter password for nbproject/enclojure.ks:

nbm:
[jar] Building jar: C:.Installs.programming.clojure.rep\enclojure\src\enclojure.plugin.netbeans\build\org-enclojure-ide-nb-editor.nbm
[makenbm] Signing NBM file C:.Installs.programming.clojure.rep\enclojure\src\enclojure.plugin.netbeans\build\org-enclojure-ide-nb-editor.nbm
[signjar] Signing JAR: C:.Installs.programming.clojure.rep\enclojure\src\enclojure.plugin.netbeans\build\org-enclojure-ide-nb-editor.nbm to C:.Installs.programming.clojure.rep\enclojure\src\enclojure.plugin.netbeans\build\org-enclojure-ide-nb-editor.nbm as mycert
[signjar] jarsigner: you must enter key password
[signjar] Enter Passphrase for keystore:

BUILD FAILED
C:.Installs.programming.clojure.rep\enclojure\build.xml:49: The following error occurred while executing this line:
C:\Program Files\NetBeans 6.7.1\harness\common.xml:363: jarsigner returned: 1
"

[SergeyDidenko]

Sources are the master branch just updated.