image: remove spaces from toupper function

The extra prefix space is passed to the caller.

Signed-off-by: Luka Perkov <luka@openwrt.org>

SVN-Revision: 38855
v19.07.3_mercusys_ac12_duma
Luka Perkov 11 years ago
parent 03fcc9bf43
commit fbe8d27c7f
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