Fix target utilization property_get.

Copy and paste error where wrong compare meant the code thought a target
utilization option was specified even if there wasn't one.

b/7062303

Change-Id: Ibf1c6cf72743c5fbec7618a719d12d0373184754

core/jni/AndroidRuntime.cpp

@@ -574,7 +574,7 @@ int AndroidRuntime::startVm(JavaVM** pJavaVM, JNIEnv** pEnv)
 
     strcpy(heaptargetutilizationOptsBuf, "-XX:HeapTargetUtilization=");
     property_get("dalvik.vm.heaptargetutilization", heaptargetutilizationOptsBuf+26, "");
-    if (heapmaxfreeOptsBuf[26] != '\0') {
+    if (heaptargetutilizationOptsBuf[26] != '\0') {
         opt.optionString = heaptargetutilizationOptsBuf;
         mOptions.add(opt);
     }