fix: correct pure virtual function syntax and char comparison in Autorun

Author: bobtista

Core/Tools/Autorun/WSYS_FileSystem.h

@@ -74,7 +74,7 @@ class FileSystem
 	public:
 
 		virtual					~FileSystem() {};
-		virtual	File*		open( const Char *filename, Int access = 0 ) = nullptr ;		///< opens a File interface to the specified file
+		virtual	File*		open( const Char *filename, Int access = 0 ) = 0 ;		///< opens a File interface to the specified file
 
 
 };

Core/Tools/Autorun/WSYS_file.h

@@ -111,15 +111,15 @@ class File
 		virtual Bool	open( const Char *filename, Int access = 0 );				///< Open a file for access
 		virtual void	close( void );																			///< Close the file !!! File object no longer valid after this call !!!
 
-		virtual Int		read( void *buffer, Int bytes ) = nullptr ;						/**< Read the specified number of bytes from the file in to the
+		virtual Int		read( void *buffer, Int bytes ) = 0 ;						/**< Read the specified number of bytes from the file in to the
 																																			  *  memory pointed at by buffer. Returns the number of bytes read.
 																																			  *  Returns -1 if an error occured.
 																																			  */
-		virtual Int		write( void *buffer, Int bytes ) = nullptr ;						/**< Write the specified number of bytes from the
+		virtual Int		write( void *buffer, Int bytes ) = 0 ;						/**< Write the specified number of bytes from the
 																																			  *	 memory pointed at by buffer to the file. Returns the number of bytes written.
 																																			  *	 Returns -1 if an error occured.
 																																			  */
-		virtual Int		seek( Int bytes, seekMode mode = CURRENT ) = nullptr;	/**< Sets the file position of the next read/write operation. Returns the new file
+		virtual Int		seek( Int bytes, seekMode mode = CURRENT ) = 0;	/**< Sets the file position of the next read/write operation. Returns the new file
 																																				*  position as the number of bytes from the start of the file.
 																																				*  Returns -1 if an error occured.
 																																				*

Core/Tools/Autorun/autorun.cpp

@@ -1313,9 +1313,9 @@ BOOL MainWindow::Is_Product_Registered( void )
 			{
 				char	*sp;
 
-				strcpy( szUninstallPath, aName );
-				sp = strchr(szUninstallPath,'/');
-				if(*sp != nullptr)
+			strcpy( szUninstallPath, aName );
+			sp = strchr(szUninstallPath,'/');
+			if(sp != nullptr && *sp != '\0')
 				{
 					strcpy( szUninstallCommandLine, sp );
 					strcpy( szUninstallPath, aName );