Merge pull request #24054 from swiftwasm/fix-function-prototype

Author: swift-ci

stdlib/public/SwiftShims/RuntimeShims.h

@@ -57,7 +57,7 @@ SWIFT_RUNTIME_STDLIB_API
 int _swift_stdlib_putc_stderr(int C);
 
 SWIFT_RUNTIME_STDLIB_API
-__swift_size_t _swift_stdlib_getHardwareConcurrency();
+__swift_size_t _swift_stdlib_getHardwareConcurrency(void);
 
 /// Manually allocated memory is at least 16-byte aligned in Swift.
 ///