udpardTxPop now accepts mutable item #sonar #260

Job	Run time
debug (clang)	3m 24s
avr (c99)	1m 48s
debug (gcc)	3m 16s
arm (c99)	2m 2s
avr (c11)	1m 45s
optimizations (clang, Release)	1m 7s
arm (c11)	1m 29s
avr (gnu99)	1m 45s
optimizations (clang, MinSizeRel)	1m 7s
avr (gnu11)	1m 52s
optimizations (gcc, Release)	1m 17s
arm (gnu99)	2m 14s
sonar	1m 50s
optimizations (gcc, MinSizeRel)	1m 7s
arm (gnu11)	1m 50s
style_check	7s
	28m 0s

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