[Denoise profiled] strength increments by 0.5 instead of 0.05 if scrolled by mouse wheel

[AxelG-DE]

Describe the bug

Using mouse wheel, the strength of denoise profiled increments by 0.5 (and 0.05 when keeping ctrl pressed)

To Reproduce

1. Go to darkroom / denoise profiled
2. click on strength
3. Scroll with mouse wheel
4. See error

Expected behavior

as in the past, increment by 0.05 (and with ctrl pressed by 0.005)

bisect

1c31560 is the first bad commit
commit 1c31560
Author: Diederik ter Rahe dterrahe@yahoo.com
Date: Sat May 30 10:48:20 2020 +0100

[denoiseprofile.c] introspection, refactoring, janitorial

src/iop/denoiseprofile.c | 563 ++++++++++++++++++-----------------------------
1 file changed, 212 insertions(+), 351 deletions(-)

@dterrahe may I kindly ask you to look into it?

Platform (please complete the following information):

• darktable version : 3.1.0+2414~g50eaaaa70
• OS : Linux - kernel 5.7.6-gentoo
• Distro : Gentoo Base System release 2.6
• Processor : Intel(R) Core(TM) i9-9900K CPU @ 3.60GHz
• Memory : 32 GB (4 x 8 GB) + 5GB Swap
• Graphics card0 : GeForce GTX 1060 6GB
• Graphics card1 : GeForce RTX 2070 SUPER
• Graphics driver : nvidia-drivers-440.100-r1
• OpenCL installed : Yes (opencl-headers-2020.03.13-r1)
• OpenCL activated : Yes
• Xorg : xorg-server-1.20.8
• Desktop : KDE 5
• GTK+ : gtk+-3.24.16
• gcc : x86_64-pc-linux-gnu-9.3.0
• cflags : CFLAGS="-march=native-O2-mtune=native-pipe"
• CMAKE_BUILD_TYPE : "Release"