Fix typo in condition for getting the compiled code.

Due to a late refactor we unintentionally flipped a condition and
returned early on code-collection being off instead of it being on.

Test: ./test.py --host --trace --ntrace
Test: ./test/testrunner/testrunner.py --host --runtime-option=-Xjitthreshold:0 --jit
Test: ./test/testrunner/testrunner.py --host --jit --debug --runtime-option=-Xplugin:libtracefast-trampolined.so
Test: ./test/testrunner/testrunner.py --host --jit --debug --runtime-option=-Xjitthreshold:0 --runtime-option=-Xplugin:libtracefast-trampolined.so
Test: ./test/testrunner/testrunner.py --host --debuggable --run-test-option='--with-agent libtifast.so=MethodEntry,MethodExit'
Test: ./test/testrunner/testrunner.py --host --debuggable --jit --runtime-option=-Xjitthreshold:0 --run-test-option='--with-agent libtifast.so=MethodEntry,MethodExit'
Test: adb shell am start-activity -S --attach-agent /data/local/tmp/libtifast.so=MethodEntry,MethodExit <some app>
Test: ./test/testrunner/testrunner.py --host --runtime-option=-Xplugin:libtracefast-trampolined.so
Change-Id: I2f341cf748530f79a574933a3abb4f32a5019d03