fix(all): coverity scan problem fixed

source/os/src/osFile.c

@@ -191,7 +191,7 @@ int32_t taosRenameFile(const char *oldName, const char *newName) {
     printf("failed to rename file %s to %s, reason:%s\n", oldName, newName, strerror(errno));
   }
 
-  return code ? 0 : 1;
+  return code ? 0 : -1;
 #else
   int32_t code = rename(oldName, newName);
   if (code < 0) {

source/util/src/tcompression.c

@@ -2275,6 +2275,7 @@ int32_t tsCompressBool(void *pIn, int32_t nIn, int32_t nEle, void *pOut, int32_t
   } else if (cmprAlg == TWO_STAGE_COMP) {
     int32_t len = tsCompressBoolImp(pIn, nEle, pBuf);
     if (len < 0) {
+      strerror(errno));
       return -1;
     }
     return tsCompressStringImp(pBuf, len, pOut, nOut);

source/util/src/tencode.c

@@ -109,9 +109,7 @@ void tEndEncode(SEncoder* pCoder) {
     pCoder->size = pNode->size;
     pCoder->pos = pNode->pos;
 
-    if (tEncodeI32(pCoder, len) < 0) {
-      return;
-    }
+    (void)tEncodeI32(pCoder, len);
 
     TD_CODER_MOVE_POS(pCoder, len);
   }

source/util/src/tlog.c

@@ -207,9 +207,7 @@ static void taosKeepOldLog(char *oldName) {
   char    fileName[LOG_FILE_NAME_LEN + 20];
   snprintf(fileName, LOG_FILE_NAME_LEN + 20, "%s.%" PRId64, tsLogObj.logName, fileSec);
 
-  if (taosRenameFile(oldName, fileName) != 0) {
-    return;
-  }
+  (void)taosRenameFile(oldName, fileName);
 
   if (tsLogKeepDays < 0) {
     char compressFileName[LOG_FILE_NAME_LEN + 20];

tools/shell/src/shellTire.c

@@ -356,9 +356,9 @@ void enumFromTree(STire* tire, SMatch* match) {
     }
 
     // this branch have data
-    if (c->end)
+    if (c->end) {
       addWordToMatch(match, pre);
-    else {
+    } else {
       matchPrefix(tire, pre, match);
     }
   }