callmap changes (#2612)

* set_error_handler return the same type as its param

* a constant can only have scalars, array of scalars or null

* a constant can only have scalars, array of scalars or null

src/Psalm/Internal/CallMap.php

@@ -1191,7 +1191,7 @@
 'connection_aborted' => ['int'],
 'connection_status' => ['int'],
 'connection_timeout' => ['int'],
-'constant' => ['mixed', 'const_name'=>'string'],
+'constant' => ['scalar|array<scalar>|null', 'const_name'=>'string'],
 'convert_cyr_string' => ['string', 'str'=>'string', 'from'=>'string', 'to'=>'string'],
 'convert_uudecode' => ['string', 'data'=>'string'],
 'convert_uuencode' => ['string', 'data'=>'string'],
@@ -11224,7 +11224,7 @@
 'ReflectionClassConstant::getDocComment' => ['string|false'],
 'ReflectionClassConstant::getModifiers' => ['int'],
 'ReflectionClassConstant::getName' => ['string'],
-'ReflectionClassConstant::getValue' => ['mixed'],
+'ReflectionClassConstant::getValue' => ['scalar|array<scalar>|null'],
 'ReflectionClassConstant::isPrivate' => ['bool'],
 'ReflectionClassConstant::isProtected' => ['bool'],
 'ReflectionClassConstant::isPublic' => ['bool'],
@@ -11913,7 +11913,7 @@
 'SessionUpdateTimestampHandler::validateId' => ['char', 'id'=>'string'],
 'SessionUpdateTimestampHandlerInterface::updateTimestamp' => ['bool', 'key'=>'string', 'val'=>'string'],
 'SessionUpdateTimestampHandlerInterface::validateId' => ['bool', 'key'=>'string'],
-'set_error_handler' => ['?callable', 'error_handler'=>'null|callable(int,string,string=,int=,array=):bool', 'error_types='=>'int'],
+'set_error_handler' => ['null|callable(int,string,string=,int=,array=):bool', 'error_handler'=>'null|callable(int,string,string=,int=,array=):bool', 'error_types='=>'int'],
 'set_exception_handler' => ['null|callable(Throwable):void', 'exception_handler'=>'null|callable(Throwable):void'],
 'set_file_buffer' => ['int', 'fp'=>'resource', 'buffer'=>'int'],
 'set_include_path' => ['string|false', 'new_include_path'=>'string'],