bug#79171: -s is ignored when using resizepart for shrinking a partition

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When using resizepart with "-s" a warning prompt is still printed when
shrinking a partition. Then the command fails without actually prompting
for Yes/No.

Seen using parted version 3.6:
```
$ sudo parted -s /dev/loop0 unit B resizepart 1 420478975
Warning: Shrinking a partition can cause data loss, are you sure you want
to continue?
$ echo $?
1
```

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<div dir=3D"ltr"><div>When using resizepart with &quot;-s&quot; a warning p=
rompt is still printed when shrinking a partition. Then the command fails w=
ithout actually prompting for Yes/No.</div><div><br></div><div>Seen using p=
arted version 3.6:</div>```<div>$ sudo parted -s /dev/loop0 unit B resizepa=
rt 1 420478975<br>Warning: Shrinking a partition can cause data loss, are y=
ou sure you want to continue?<br>$ echo $?<br>1<br><div>```</div></div><div=
><br></div><div><br></div></div>

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