Minor fixes to get build working for vs2017 project;

src/fileio/debugout.win.cpp

@@ -15,8 +15,8 @@ public:
 	}
 protected:
 	int sync() {
-		output_debug_string(str().c_str());
-		str(std::basic_string<CharT>()); // Clear the string buffer
+		output_debug_string(this->str().c_str());
+		this->str(std::basic_string<CharT>()); // Clear the string buffer
 		return 0;
 	}
 

src/game/boe.graphics.cpp

@@ -31,7 +31,9 @@
 #include "boe.menus.hpp"
 #include "winutil.hpp"
 #include "prefs.hpp"
+#ifndef MSBUILD_GITREV
 #include "gitrev.hpp"
+#endif
 
 extern sf::RenderWindow mainPtr;
 extern short stat_window;

src/scenedit/scen.graphics.cpp

@@ -976,7 +976,7 @@ void draw_terrain(){
 
 void draw_monsts() {
 	short width,height,m_start_pic;
-	sf::Texture* from_gworld;
+	sf::Texture* from_gworld = nullptr;
 	rectangle source_rect;
 	location where_draw,store_loc;
 	

src/scenedit/scen.keydlgs.cpp

@@ -831,8 +831,8 @@ static bool edit_spec_enc_value(cDialog& me, std::string item_hit, node_stack_t&
 	bool choose_string = true;
 	eStrType strt;
 	short str_adj = 0;
-	const char* title;
-	cSpecial* node_to_change_to;
+	const char* title = "";
+	cSpecial* node_to_change_to = nullptr;
 	switch(btn) {
 		case 'm':
 			choose_string = false;