Don't use static OpenSSL on Linux by default.

cmake/OpenSSL.cmake

@@ -1,8 +1,13 @@
 if (WITH_TLS)
     set(OPENSSL_ROOT_DIR ${XMRIG_DEPS})
+
+    if (WIN32)
         set(OPENSSL_USE_STATIC_LIBS TRUE)
         set(OPENSSL_MSVC_STATIC_RT TRUE)
 
+        set(EXTRA_LIBS ${EXTRA_LIBS} Crypt32)
+    endif()
+
     find_package(OpenSSL)
 
     if (OPENSSL_FOUND)
@@ -11,10 +16,6 @@ if (WITH_TLS)
     else()
         message(FATAL_ERROR "OpenSSL NOT found: use `-DWITH_TLS=OFF` to build without TLS support")
     endif()
-
-    if (WIN32)
-        set(EXTRA_LIBS ${EXTRA_LIBS} Crypt32)
-    endif()
 else()
     set(TLS_SOURCES "")
     set(OPENSSL_LIBRARIES "")