macOS: fix compile warnings

src/detection/memory/memory.c

@@ -11,7 +11,7 @@ static void calculatePercentage(FFMemoryStorage* storage)
     if(storage->bytesTotal == 0)
         storage->percentage = 0;
     else
-        storage->percentage = (uint8_t) ((storage->bytesUsed / (long double) storage->bytesTotal) * 100.0);
+        storage->percentage = (uint8_t) (((long double) storage->bytesUsed / (long double) storage->bytesTotal) * 100.0);
 }
 
 const FFMemoryResult* ffDetectMemory()

src/detection/processes/processes_apple.c

@@ -11,7 +11,7 @@ uint32_t ffDetectProcesses(FFinstance* instance, FFstrbuf* error)
 
     if(sysctl(request, sizeof(request) / sizeof(*request), NULL, &length, NULL, 0) != 0)
     {
-        ffStrbufAppend(error, "sysctl() failed");
+        ffStrbufAppendS(error, "sysctl() failed");
         return 0;
     }
     return (uint32_t)(length / sizeof(struct kinfo_proc));

src/detection/temps/temps_apple.c

@@ -207,7 +207,7 @@ static const char *smcReadValue(io_connect_t conn, const UInt32Char_t key, doubl
         uint64_t tmp = 0;
         for (uint32_t i = 0; i < val.dataSize; i++)
             tmp += (uint64_t)((uint8_t)(val.bytes[i]) * pow(256, val.dataSize - 1 - i));
-        *value = tmp;
+        *value = (double)tmp;
     }
     else if (strcmp(val.dataType, kDataTypeFlt) == 0)
     {

src/modules/disk.c

@@ -24,7 +24,7 @@ static void printFolder(FFinstance* instance, FFDiskResult* folder)
         });
     }
 
-    uint8_t percentage = (uint8_t) ((folder->used / (long double) folder->total) * 100.0);
+    uint8_t percentage = (uint8_t) (((long double) folder->used / (long double) folder->total) * 100.0);
 
     FFstrbuf usedPretty;
     ffStrbufInit(&usedPretty);