using memset() to shorten some code.

DCPlugin.pro

@@ -25,8 +25,8 @@ contains( CONFIG, DesktopLinux ) {
 }
 
 contains( CONFIG, PTU5 ) {
-    QMAKE_CC = ccache $$QMAKE_CC
-    QMAKE_CXX = ccache $$QMAKE_CXX
+    # QMAKE_CC = ccache $$QMAKE_CC
+    # QMAKE_CXX = ccache $$QMAKE_CXX
     QMAKE_CXXFLAGS += -std=c++11
     linux-clang {  QMAKE_CXXFLAGS += -Qunused-arguments   }
     CONFIG += link_pkgconfig
@@ -35,7 +35,6 @@ contains( CONFIG, PTU5 ) {
     # NOTE: include contents of DCPlugin.pri. Also used by ATBQT.
     # Add new files in DCPlugin.pri.
     include(DCPlugin.pri)
-
 }
 
 contains( CONFIG, PTU5_YOCTO ) {

src/hwapi.cpp

@@ -2839,9 +2839,9 @@ void hwapi::bl_rebootDC(void) const
     sendWRcmd_setSendBlock160(len, buf);
 }
 
-void hwapi::bl_startBL(void) const
-{
+void hwapi::bl_startBL(void) const {
     uint8_t len, buf[20];
+    memset(buf, 0x00, sizeof(buf));
 
     len=dcBL_activatBootloader(buf);
     sendWRcmd_setSendBlock160(len, buf);
@@ -2861,9 +2861,10 @@ bool hwapi::bl_checkBL(void) const
 bool hwapi::bl_isUp(void) const
 {
     uint8_t receivedData[160];
-    uint8_t LL, nn;
+    uint8_t LL;
+
+    memset(receivedData, 0x00, sizeof(receivedData));
 
-    for (nn=0; nn<160; nn++) receivedData[nn]=0;
     LL=epi_getRawRecLength();
     if (LL>0)
     {