Fix various problems with unchecked return values from syscalls.

Signed-off-by: Joachim Nilsson <troglobit@gmail.com>

libite/copyfile.c

@@ -344,7 +344,7 @@ int main(void)
 		if (fexist(files[i + 2]))
 			fprintf(stderr, "OK => %s\n", files[i + 2]);
 
-		remove(files[i + 2]);
+		erase(files[i + 2]);
 		i += 3;
 	}
 
@@ -358,7 +358,7 @@ int main(void)
 		if (fexist(files[i + 2]))
 			fprintf(stderr, "OK => %s\n", files[i + 2]);
 
-		remove(files[i + 2]);
+		erase(files[i + 2]);
 		i += 3;
 	}
 

libite/dir.c

@@ -142,13 +142,13 @@ int simulate_files(int creat)
 		if (creat)
 			touch(files[i]);
 		else
-			remove(files[i]);
+			erase(files[i]);
 	}
 
 	if (creat)
 		symlink("config2.cfg", STARTUP_CONFIG);
 	else
-		remove(STARTUP_CONFIG);
+		erase(STARTUP_CONFIG);
 
 	return 0;
 }