Merge pull request #3156 from compnerd/typedefs

Author: swift-ci

stdlib/public/SwiftShims/LibcShims.h

@@ -33,9 +33,9 @@ namespace swift { extern "C" {
 typedef           int __swift_ssize_t;
 #elif defined(_MSC_VER)
 #if defined(_M_ARM) || defined(_M_IX86)
-typedef           int __swift_size_t;
+typedef           int __swift_ssize_t;
 #elif defined(_M_X64)
-typedef long long int __swift_size_t;
+typedef long long int __swift_ssize_t;
 #else
 #error unsupported machine type
 #endif