Only call jit_load after the zygote fork

Otherwise we always get that enable_debug_features is false since
that flag passed as a compiler option post zygote fork.

No significant change to libart-compiler PSS on calculator.

Bug: 27810774

(cherry picked from commit b10cef442594dd0d6c5f1a5784643931a25cc431)

Change-Id: Ie50668ba05ad07a5cf046497959f6d27e09f8fe2
diff --git a/runtime/runtime.cc b/runtime/runtime.cc
index a9ff088..8a38f3a 100644
--- a/runtime/runtime.cc
+++ b/runtime/runtime.cc
@@ -573,7 +573,7 @@
     // If we are the zygote then we need to wait until after forking to create the code cache
     // due to SELinux restrictions on r/w/x memory regions.
       CreateJit();
-    } else if (!jit::Jit::LoadCompiler(&error_msg)) {
+    } else if (!jit::Jit::LoadCompilerLibrary(&error_msg)) {
       // Try to load compiler pre zygote to reduce PSS. b/27744947
       LOG(WARNING) << "Failed to load JIT compiler with error " << error_msg;
     }