Fix a typo in a comment.

Change-Id: I2579261f9ea2f8f9c64975fe6cb18c3c6102da39
diff --git a/runtime/check_jni.cc b/runtime/check_jni.cc
index 09c48b1..1b79ee0 100644
--- a/runtime/check_jni.cc
+++ b/runtime/check_jni.cc
@@ -1755,7 +1755,7 @@
       JniAbortF(__FUNCTION__, "non-nullable address is NULL");
     }
     if (capacity < 0) {
-      JniAbortF(__FUNCTION__, "capacity must be non negative: %lld", capacity);
+      JniAbortF(__FUNCTION__, "capacity must be non-negative: %lld", capacity);
     }
     return CHECK_JNI_EXIT("L", baseEnv(env)->NewDirectByteBuffer(env, address, capacity));
   }