Fix operand in fat pointer comparison #7102

# to view logs

Job	Run time
benchcomp-tests	3m 20s
documentation	2m 15s
perf	28m 46s
regression (macos-13)	34m 58s
write-json-symtab-regression	13m 27s
regression (ubuntu-20.04)	21m 9s
regression (ubuntu-22.04)	21m 16s
regression (macos-14)	17m 46s
	2h 22m 57s

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