[JVMCI] only check HotSpotCompiledCode stream is empty if installation succeeds

Decoding the HotSpotCompiledCode stream (see JDK-8289094) can be short circuited if certain limits are encountered such as the code cache being full or the JVMCINMethodSizeLimit being exceeded. In this case, the check that the complete stream has been read should be emitted. Otherwise, it will fail as follows:

    Exception raised in scope JVMCI-native CompilerThread2.CodeInstall.CodeInstall: jdk.vm.ci.common.JVMCIError: 1 bytes remaining in stream
    at 0x00007fb038010c49 in HotSpotCompiledCode stream