Fixed all build warnings

src/ams/DsmrParser.cpp

@@ -4,7 +4,6 @@ int8_t DSMRParser::parse(uint8_t *buf, DataParserContext &ctx, bool verified) {
     uint16_t crcPos = 0;
     bool reachedEnd = verified;
     uint8_t lastByte = 0x00;
-    int c = 0;
     for(int pos = 0; pos < ctx.length; pos++) {
         uint8_t b = *(buf+pos);
         if(pos == 0 && b != '/') return DATA_PARSE_BOUNDRY_FLAG_MISSING;

src/ams/GcmParser.cpp

@@ -27,7 +27,7 @@ int8_t GCMParser::parse(uint8_t *d, DataParserContext &ctx) {
     memcpy(ctx.system_title, ptr, systemTitleLength);
     memcpy(initialization_vector, ctx.system_title, systemTitleLength);
 
-    int len;
+    int len = 0;
     int headersize = 2 + systemTitleLength;
     ptr += systemTitleLength;
     if(((*ptr) & 0xFF) == 0x81) {

src/ams/HdlcParser.cpp

@@ -5,8 +5,6 @@
 int8_t HDLCParser::parse(uint8_t *d, DataParserContext &ctx) {
     int len;
 
-    uint8_t flag = *d;
-
     uint8_t* ptr;
     if(ctx.length < 3)
         return DATA_PARSE_INCOMPLETE;

src/ams/LlcParser.cpp

@@ -1,7 +1,6 @@
 #include "LlcParser.h"
 
 int8_t LLCParser::parse(uint8_t *buf, DataParserContext &ctx) {
-    LLCHeader* llc = (LLCHeader*) buf;
     ctx.length -= 3;
     return 3;
 }

src/ams/MbusParser.cpp

@@ -5,8 +5,6 @@ int8_t MBUSParser::parse(uint8_t *d, DataParserContext &ctx) {
     int headersize = 3;
     int footersize = 1;
 
-    uint8_t flag = *d;
-
     uint8_t* ptr;
 
     // https://m-bus.com/documentation-wired/06-application-layer