Fix incorrect usage of bool

A bool can't be < 0

Change-Id: Ie94ffadcb38c95214d1105c02610e59b4b2872b2
Signed-off-by: Bernhard Rosenkränzer <Bernhard.Rosenkranzer@linaro.org>
Fix check for PROC_QUOTES mode

Since != has priority over &, the "if ((mode&PROC_QUOTES != 0))" check
is the same as "if (mode & (PROC_QUOTES!=0))" - not what the code
intends.

Change-Id: I14840a887f26c28f2bd0aee8704c79cf353164ad
Signed-off-by: Bernhard Rosenkränzer <Bernhard.Rosenkranzer@linaro.org>