allow analysis even if file does not have zst extension

programs/fileio.c

@@ -914,8 +914,8 @@ static int getFileInfo(fileInfo_t* info, const char* inFileName){
             }
             size_t const headerSize = ZSTD_frameHeaderSize(headerBuffer, numBytesRead);
             if (ZSTD_isError(headerSize)) {
-                fclose(srcFile);
                 DISPLAY("Error: could not determine frame header size\n");
+                fclose(srcFile);
                 return 1;
             }
 
@@ -1037,25 +1037,20 @@ void displayInfo(const char* inFileName, fileInfo_t* info, int displayLevel){
             DISPLAYOUT("Check: XXH64\n");
         }
     }
+
+    DISPLAYOUT("\n");
 }
 
 int FIO_listFile(const char* inFileName, int displayLevel){
-    const char* const suffixPtr = strrchr(inFileName, '.');
     DISPLAY("File: %s\n", inFileName);
-    if (!suffixPtr || strcmp(suffixPtr, ZSTD_EXTENSION)) {
-        DISPLAYLEVEL(1, "file %s was not compressed with zstd -- ignoring\n\n", inFileName);
-        return 1;
-    }
-    else {
     fileInfo_t* info = (fileInfo_t*)malloc(sizeof(fileInfo_t));
     int error = getFileInfo(info, inFileName);
     if (error == 1) {
         DISPLAY("An error occurred with getting file info\n");
-            exit(1);
+        return 1;
     }
     displayInfo(inFileName, info, displayLevel);
-    }
+    free(info);
-    DISPLAY("\n");
     return 0;
 }