Add -O3 on the client's side and fix yielding warnings

client/Makefile

@@ -12,9 +12,9 @@ OBJDIR = obj
 
 LDLIBS = -L/opt/local/lib -L/usr/local/lib -lusb -lreadline -lpthread
 LDFLAGS = $(COMMON_FLAGS)
-CFLAGS = -std=gnu99 -I. -I../include -I../common -I/opt/local/include -Wall -Wno-unused-function $(COMMON_FLAGS) -g3
+CFLAGS = -std=gnu99 -I. -I../include -I../common -I/opt/local/include -Wall -Wno-unused-function $(COMMON_FLAGS) -g -O3
 
-CXXFLAGS = $(shell pkg-config --cflags QtCore QtGui 2>/dev/null) -Wall
+CXXFLAGS = $(shell pkg-config --cflags QtCore QtGui 2>/dev/null) -Wall -O3
 QTLDLIBS = $(shell pkg-config --libs QtCore QtGui 2>/dev/null)
 
 ifeq ($(shell uname),Darwin)

client/cmddata.c

@@ -534,7 +534,7 @@ int CmdManchesterDemod(const char *Cmd)
   int i, j, invert= 0;
   int bit;
   int clock;
-  int lastval;
+  int lastval = 0;
   int low = 0;
   int high = 0;
   int hithigh, hitlow, first;

client/cmdhf15.c

@@ -90,7 +90,7 @@ int CmdHF15Demod(const char *Cmd)
   };
 
   int i, j;
-  int max = 0, maxPos;
+  int max = 0, maxPos = 0;
 
   int skip = 4;
 

client/cmdlf.c

@@ -401,7 +401,7 @@ int CmdVchDemod(const char *Cmd)
   bits[256] = '\0';
 
   int worst = INT_MAX;
-  int worstPos;
+  int worstPos = 0;
 
   for (i = 0; i < 2048; i += 8) {
     int sum = 0;