Refactor curtime to be set at one defined point.

Until now the curtime variable was set at every call Sys_*seconds().
That's a little bit unfortunate because calls to that functions are
scattered around the code. Instead set it once every frame in
Qcommon_Frame().

src/backends/unix/system.c

@@ -52,7 +52,6 @@
 #include "header/unix.h"
 
 unsigned sys_frame_time;
-int curtime;
 static void *game_library;
 
 static char findbase[MAX_OSPATH];
@@ -103,16 +102,13 @@ Sys_Microseconds(void)
 		--sec;
 	}
 
-	curtime = (int)((sec*1000000ll + nsec/1000ll) / 1000ll);
 	return sec*1000000ll + nsec/1000ll;
 }
 
 int
 Sys_Milliseconds(void)
 {
-	curtime = (int)(Sys_Microseconds()/1000ll);
-
-	return curtime;
+	return (int)(Sys_Microseconds()/1000ll);
 }
 
 void

src/backends/windows/system.c

@@ -41,7 +41,6 @@
 
 #define MAX_NUM_ARGVS 128
 
-int curtime;
 int starttime;
 qboolean ActiveApp;
 qboolean Minimized;
@@ -430,19 +429,16 @@ Sys_Microseconds(void)
 
 	if (!uSecbase)
 	{
-		uSecbase = microseconds - 1001;
+		uSecbase = microseconds / 1000ll;
 	}
 
-	curtime = (int)((microseconds - uSecbase) / 1000ll);
 	return microseconds - uSecbase;
 }
 
 int
 Sys_Milliseconds(void)
 {
-	curtime = (int)(Sys_Microseconds()/1000ll);
-
-	return curtime;
+	return (int)(Sys_Microseconds()/1000ll);
 }
 
 void

src/common/frame.c

@@ -35,7 +35,6 @@ cvar_t *fixedtime;
 cvar_t *cl_maxfps;
 cvar_t *dedicated;
 
-
 extern cvar_t *logfile_active;
 extern jmp_buf abortframe; /* an ERR_DROP occured, exit the entire frame */
 extern zhead_t z_chain;
@@ -62,6 +61,9 @@ int time_after_game;
 int time_before_ref;
 int time_after_ref;
 
+// Used in the network- and input pathes.
+int curtime;
+
 #ifndef DEDICATED_ONLY
 void Key_Init(void);
 void SCR_EndLoadingPlaque(void);
@@ -300,6 +302,10 @@ Qcommon_Frame(int msec)
 	}
 
 
+	// Save global time for network- und input code.
+	curtime = Sys_Milliseconds();
+
+
 	// Calculate target packet- and renderframerate.
 	if (R_IsVSyncActive())
 	{
@@ -470,6 +476,11 @@ Qcommon_Frame(int msec)
 	}
 
 
+	// Save global time for network- und input code.
+	curtime = Sys_Milliseconds();
+
+
+	// Target framerate.
 	pfps = (int)cl_maxfps->value;