Merge pull request #67 from goto1134/patch-1

Typo fixed

src/main/java/jnr/ffi/annotations/IgnoreError.java

@@ -22,7 +22,7 @@
 import java.lang.annotation.RetentionPolicy;
 
 /**
- * Indicates that the errno valud for a native function need not be saved after
+ * Indicates that the errno value for a native function need not be saved after
  * the function returns.
  *
  * <p>Due to the nature of the Java Virtual Machine, the errno value must be saved