minor memory leak in C example

examples/Makefile

@@ -14,7 +14,7 @@ compact_files_example: compact_files_example.cc
 	$(CXX) $(CXXFLAGS) $@.cc -o$@ ../librocksdb.a -I../include -O2 -std=c++11 $(PLATFORM_LDFLAGS) $(PLATFORM_CXXFLAGS) $(EXEC_LDFLAGS)
 
 simple_example-c: simple_example.c
-	$(CXX) -xc -I../include simple_example.c -L.. -lrocksdb -pthread -lsnappy -lbz2 -lz -lrt
+	$(CXX) -xc -I../include simple_example.c -o$@ -L.. -lrocksdb -pthread -lsnappy -lbz2 -lz -lrt
 
 clean:
 	rm -rf ./simple_example ./column_families_example ./compact_files_example ./simple_example-c

examples/simple_example.c

@@ -1,5 +1,6 @@
 #include <stdio.h>
 #include <string.h>
+#include <stdlib.h>
 #include <assert.h>
 
 #include "rocksdb/c.h"
@@ -35,6 +36,7 @@ int main (int argc, char **argv) {
 	value = rocksdb_get (db, readoptions, key, strlen (key), &len, &err);
 //	assert (!err);
 	assert (strcmp (value, "value") == 0);
+	free (value);
 
 	rocksdb_close (db);