Null for string in regex match should return false

[jaccomoc]

At the moment null =~ /abc/ gives a NullError but while(null =~ /abc/g) {} throws a NullPointerException:

Invocation error: java.lang.RuntimeException: java.lang.NullPointerException
java.lang.IllegalStateException: Invocation error: java.lang.RuntimeException: java.lang.NullPointerException
at io.jactl.ScriptCompiler.lambda$compileWithCompletion$0(ScriptCompiler.java:60)
at io.jactl.JactlScript.run(JactlScript.java:64)
at io.jactl.JactlScript.lambda$runSync$0(JactlScript.java:93)
at io.jactl.vertx.JactlVertxEnv.lambda$scheduleEvent$1(JactlVertxEnv.java:87)
at io.vertx.core.impl.ContextInternal.dispatch(ContextInternal.java:277)
at io.vertx.core.impl.ContextInternal.dispatch(ContextInternal.java:259)
at io.vertx.core.impl.EventLoopContext.lambda$runOnContext$0(EventLoopContext.java:43)
at io.netty.util.concurrent.AbstractEventExecutor.runTask(AbstractEventExecutor.java:173)
at io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:166)
at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:470)
at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:569)
at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:997)
at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
at java.base/java.lang.Thread.run(Thread.java:829)
Caused by: java.lang.RuntimeException: java.lang.NullPointerException
at io.jactl.ScriptCompiler.lambda$compile$1(ScriptCompiler.java:96)
at io.jactl.ScriptCompiler.lambda$compileWithCompletion$0(ScriptCompiler.java:50)
... 14 more
Caused by: java.lang.NullPointerException
at io.jactl.runtime.RegexMatcher$GlobalMatcher.regexFind(RegexMatcher.java:298)
at io.jactl.runtime.RegexMatcher.regexFind(RegexMatcher.java:165)
at io.jactl.pkg.$j$ScriptF0AA547A286A77B4EDAEB0142622E159.$j$main(_$j$ScriptF0AA547A286A77B4EDAEB0142622E159.jactl:1)
at io.jactl.ScriptCompiler.lambda$compile$1(ScriptCompiler.java:83)
... 15 more
We should just make null matches return false and treat them both consistently.