Add fuzz test for QueryParser

fuzzing/Makefile

@@ -22,6 +22,7 @@ oss-fuzz:
 	# Link against object files
 	$(CXX) $(CXXFLAGS) $(WRAPPED_SYSCALLS) -std=c++17 -O2 -DUWS_NO_ZLIB -I../src -I../uSockets/src EpollHelloWorld.cpp -o $(OUT)/EpollHelloWorld $(LIB_FUZZING_ENGINE) *.o
 # "Unit tests"
+	$(CXX) $(CXXFLAGS) -std=c++17 -O3 QueryParser.cpp -o $(OUT)/QueryParser $(LIB_FUZZING_ENGINE)
 	$(CXX) $(CXXFLAGS) -std=c++17 -O3 WebSocket.cpp -o $(OUT)/WebSocket $(LIB_FUZZING_ENGINE)
 	$(CXX) $(CXXFLAGS) -std=c++17 -O3 Http.cpp -o $(OUT)/Http $(LIB_FUZZING_ENGINE)
 	$(CXX) $(CXXFLAGS) -DUWS_WITH_PROXY -std=c++17 -O3 Http.cpp -o $(OUT)/HttpWithProxy $(LIB_FUZZING_ENGINE)

fuzzing/QueryParser.cpp

@@ -0,0 +1,13 @@
+#include "../src/QueryParser.h"
+
+#include <string>
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
+
+    std::string modifiableInput((char *) data, size);
+
+    uWS::getDecodedQueryValue("", modifiableInput);
+    uWS::getDecodedQueryValue("hello", modifiableInput);
+
+    return 0;
+}

fuzzing/QueryParser.dict

@@ -0,0 +1,7 @@
+"?"
+"%FF"
+"&"
+"+"
+"hello"
+"="
+